3(x+15)=36+45

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Solution for 3(x+15)=36+45 equation: 



3(x+15)=36+45

We move all terms to the left:

3(x+15)-(36+45)=0

We add all the numbers together, and all the variables

3(x+15)-81=0

We multiply parentheses

3x+45-81=0

We add all the numbers together, and all the variables

3x-36=0

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

3x=36

x=36/3

x=12

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