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What is x in the equation 4x+0.4=4.4?

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helga95 | (Level 1) Honors

Posted September 9, 2011 at 3:01 AM via web

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What is x in the equation 4x+0.4=4.4?

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giorgiana1976 | College Teacher | (Level 3) Valedictorian

Posted September 9, 2011 at 3:03 AM (Answer #1)

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First step is to isolate the term that contains the unknown x to the left side. For this reason, we'll subtract 0.4 both sides:

4x = 4.4 - 0.4

4x = 4

Now, we'll divide both sides by 4:

x = 1.

Another way to solve this problem is to divide both sides by 4:

x + 0.4/4 = 4.4/4

x + 0.1 = 1.1

Now, we'll subtract 0.1 both sides:

x = 1.1 - 0.1

x = 1

The required solution of the given equation is x = 1.

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mari1999 | Student | (Level 1) eNoter

Posted September 9, 2011 at 11:38 AM (Answer #2)

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4x+0.4=4.4

you subtract 0.4 from each side

-0.4         -0.4

4x    =       4

you divide by 4 from each side

/4                   /4

   x    = 1

 

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