3(10-a)=18

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Solution for 3(10-a)=18 equation: 



3(10-a)=18

We move all terms to the left:

3(10-a)-(18)=0

We add all the numbers together, and all the variables

3(-1a+10)-18=0

We multiply parentheses

-3a+30-18=0

We add all the numbers together, and all the variables

-3a+12=0

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

-3a=-12

a=-12/-3

a=+4

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