a+(a-3)+(a*3+2)=74

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Solution for a+(a-3)+(a*3+2)=74 equation: 



a+(a-3)+(a*3+2)=74

We move all terms to the left:

a+(a-3)+(a*3+2)-(74)=0

We get rid of parentheses

a+a+a*3-3+2-74=0

We add all the numbers together, and all the variables

2a+a*3-75=0

Wy multiply elements

2a+3a-75=0

We add all the numbers together, and all the variables

5a-75=0

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

5a=75

a=75/5

a=15

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