(a-3)+(2a-33)=90

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Solution for (a-3)+(2a-33)=90 equation: 



(a-3)+(2a-33)=90

We move all terms to the left:

(a-3)+(2a-33)-(90)=0

We get rid of parentheses

a+2a-3-33-90=0

We add all the numbers together, and all the variables

3a-126=0

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

3a=126

a=126/3

a=42

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