3(a-2)+4(2a+1)=75

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Solution for 3(a-2)+4(2a+1)=75 equation: 



3(a-2)+4(2a+1)=75

We move all terms to the left:

3(a-2)+4(2a+1)-(75)=0

We multiply parentheses

3a+8a-6+4-75=0

We add all the numbers together, and all the variables

11a-77=0

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

11a=77

a=77/11

a=7

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