7(a-30)=10a

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Solution for 7(a-30)=10a equation: 



7(a-30)=10a

We move all terms to the left:

7(a-30)-(10a)=0

We add all the numbers together, and all the variables

-10a+7(a-30)=0

We multiply parentheses

-10a+7a-210=0

We add all the numbers together, and all the variables

-3a-210=0

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

-3a=210

a=210/-3

a=-70

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