3(a+4)+2(2a+5)=12

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Solution for 3(a+4)+2(2a+5)=12 equation: 



3(a+4)+2(2a+5)=12

We move all terms to the left:

3(a+4)+2(2a+5)-(12)=0

We multiply parentheses

3a+4a+12+10-12=0

We add all the numbers together, and all the variables

7a+10=0

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

7a=-10

a=-10/7

a=-1+3/7

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