7=x-3.5x

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Solution for 7=x-3.5x equation: 



7=x-3.5x

We move all terms to the left:

7-(x-3.5x)=0

We add all the numbers together, and all the variables

-(-2.5x)+7=0

We get rid of parentheses

2.5x+7=0

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

2.5x=-7

x=-7/2.5

x=-2+1/1.25

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