7.2=8.7-0.5x

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Solution for 7.2=8.7-0.5x equation: 



7.2=8.7-0.5x

We move all terms to the left:

7.2-(8.7-0.5x)=0

We add all the numbers together, and all the variables

-(-0.5x+8.7)+7.2=0

We get rid of parentheses

0.5x-8.7+7.2=0

We add all the numbers together, and all the variables

0.5x-1.5=0

We move all terms containing x to the left, all other terms to the right

0.5x=1.5

x=1.5/0.5

x=3

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