210=7(10x-20)

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Solution for 210=7(10x-20) equation: 



210=7(10x-20)

We move all terms to the left:

210-(7(10x-20))=0



We calculate terms in parentheses: -(7(10x-20)), so:

7(10x-20)

We multiply parentheses

70x-140

Back to the equation:

-(70x-140)



We get rid of parentheses

-70x+140+210=0

We add all the numbers together, and all the variables

-70x+350=0

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

-70x=-350

x=-350/-70

x=+5

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