645=25x-30

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Solution for 645=25x-30 equation: 



645=25x-30

We move all terms to the left:

645-(25x-30)=0

We get rid of parentheses

-25x+30+645=0

We add all the numbers together, and all the variables

-25x+675=0

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

-25x=-675

x=-675/-25

x=+27

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