-3(3a-10)=12

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Solution for -3(3a-10)=12 equation: 



-3(3a-10)=12

We move all terms to the left:

-3(3a-10)-(12)=0

We multiply parentheses

-9a+30-12=0

We add all the numbers together, and all the variables

-9a+18=0

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

-9a=-18

a=-18/-9

a=+2

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