3(2a+5)+4(3a+1)=7

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Solution for 3(2a+5)+4(3a+1)=7 equation: 



3(2a+5)+4(3a+1)=7

We move all terms to the left:

3(2a+5)+4(3a+1)-(7)=0

We multiply parentheses

6a+12a+15+4-7=0

We add all the numbers together, and all the variables

18a+12=0

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

18a=-12

a=-12/18

a=-2/3

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