3(a-4)+2a=18.

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Solution for 3(a-4)+2a=18. equation: 



3(a-4)+2a=18.

We move all terms to the left:

3(a-4)+2a-(18.)=0

We add all the numbers together, and all the variables

3(a-4)+2a-18=0

We add all the numbers together, and all the variables

2a+3(a-4)-18=0

We multiply parentheses

2a+3a-12-18=0

We add all the numbers together, and all the variables

5a-30=0

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

5a=30

a=30/5

a=6

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