Solve and show work: 1.2r=-1+28

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Matthew Fonda | eNotes Employee

Posted on

We must solve: 1.2r = -1 + 28

Step one: combine like terms by adding together -1 and 28:

1.2r = 27

Step two: divide both sides by 1.2 ino order to solve for r:

1.2r/1.2 = 27/1.2

Step three: notice that we can cancel out 1.2 on the lefthand side:

r = 27/1.2

Step four: divide 27 by 1.2, bringing us to our final solution:

r = 22.5

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atyourservice | Student, Grade 11 | (Level 3) Valedictorian

Posted on

1.2r=-1+28

combine like terms (-1 and 28)

1.2r = 27

divide by 1.2 because we want r to be alone:

r= 27/1.2

r = 22.5

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taangerine | Student, Grade 12 | (Level 1) Valedictorian

Posted on

To solve: 

  • Rewrite: 1.2r=28+(-1)
  • Simplify: 1.2r=27
  • What is the opposite operation of multiplication? (division) -- Divide 1.2 from both sides to isolate r: `(1.2r)/(1.2)=27/1.2`
  • Simplify r=22.5
  • ` `
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jess1999 | Student, Grade 9 | (Level 1) Valedictorian

Posted on

1.2r = -1 + 28

To solve this equation , combine both like terms ( which is -1 and 28 )

By combining like terms , you should get

1.2r = -27 now divide both sides by 1.2 

By dividing both sides by 1.2r , you should get

r = 22.5  which is your answer

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