(x-7)10=20

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Solution for (x-7)10=20 equation: 



(x-7)10=20

We move all terms to the left:

(x-7)10-(20)=0

We multiply parentheses

10x-70-20=0

We add all the numbers together, and all the variables

10x-90=0

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

10x=90

x=90/10

x=9

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