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x/10 - 5 = 2/5Algebra I

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marisol29 | Student, Grade 11 | eNotes Newbie

Posted April 15, 2009 at 3:07 AM via web

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x/10 - 5 = 2/5

Algebra I

11 Answers | Add Yours

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cburr | Middle School Teacher | (Level 2) Associate Educator

Posted April 15, 2009 at 6:20 AM (Answer #1)

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The way to solve this problem is to isolate the X on one side of the equation.

The first step is to add 5 to both sides.

x/10 - 5 + 5 = 2/5 + 5

x/10 = 5 2/5

The next step will involve multiplying both sides by 10. First, it would be helpful to deal with the mixed number 5 2/5. You could change it to an improper fraction, but I think it's even easier to change it to a decimal: 5.4

x/10 x 10 = 5.4 x 10

x = 54

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cheezehustla | Student, Undergraduate | eNotes Newbie

Posted April 15, 2009 at 4:20 AM (Answer #2)

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x=54

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jovona | Salutatorian

Posted April 15, 2009 at 6:26 AM (Answer #3)

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One way to approach this problem is -

1st: Get the x on one side of the equation by itself. Do this by adding 5 to each side of the equation.

x/10 -5 +5 = 2/5 +5

x/10 = 2/5 +5

2nd: The next step to getting the x by itself is to multiply both sides of the equation by 10.

(x/10)(10) = (2/5)(10) + (5)(10)

x = 20/5 + 50

x = 4 + 50

x = 54

 

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kittycatdoll | Student, Undergraduate | eNotes Newbie

Posted April 17, 2009 at 1:50 PM (Answer #4)

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x=54

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Jyotsana | Student, Grade 10 | Valedictorian

Posted February 9, 2014 at 1:21 AM (Answer #5)

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x/10-5=2/5

x/10-5+5=2/5+5

x/10=27/5

x/10*10=27/5*10

x=54

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Wiggin42 | Student, Grade 11 | Valedictorian

Posted March 23, 2014 at 4:18 PM (Answer #6)

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x/10 - 5 = 2/5 

x/10 = (2/5) + 5

x = 10( (2/5) + 5 )

x = 54

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atyourservice | Student, Grade 10 | Valedictorian

Posted April 16, 2014 at 6:46 PM (Answer #7)

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x/10 - 5 = 2/5

        +5   +5

x/10 = 5 2/5

2/5 = .4

x/10= 5.4

`10xx(x/10) =5.4 xx 10 `

x=54

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jess1999 | TA , Grade 9 | Valedictorian

Posted June 20, 2014 at 4:41 AM (Answer #8)

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x/10 - 5 = 2/5

To solve this equation add five on both sides.

By adding five on both sides, your equation will look like

x/10 = 27/5 now multiply 10 on both sides

By multiplying 10 on both sides your equation will look like

X =  270/5 now simplify

By simplifying you will get

x = 54 which is your answer

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nisarg | Student, Kindergarten | Valedictorian

Posted June 20, 2014 at 4:22 PM (Answer #9)

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x/10 - 5 = 2/5

`x/10=27/5`

`5x=270`

`x=54`

``

` `

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zumba96 | Student, Grade 11 | Valedictorian

Posted June 21, 2014 at 7:12 PM (Answer #10)

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You have to isolate the variable

x/10 - 5 = 2/5

Move 5 to the other side

x/10=2/5+5

x/10=5 2/5

x/10=27/5

Then cross multiply

270/5=x 

x=54

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ik9744 | TA , Grade 9 | Valedictorian

Posted June 26, 2014 at 6:53 AM (Answer #11)

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x/10 - 5 = 2/5

x/10 = 5 2/5

x/10 = 5.4

5.4x = 10

x = 54

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