7x+21.5=12x-18.5

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Solution for 7x+21.5=12x-18.5 equation: 



7x+21.5=12x-18.5

We move all terms to the left:

7x+21.5-(12x-18.5)=0

We get rid of parentheses

7x-12x+18.5+21.5=0

We add all the numbers together, and all the variables

-5x+40=0

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

-5x=-40

x=-40/-5

x=+8

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