3(x+7+3)=45

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Solution for 3(x+7+3)=45 equation: 



3(x+7+3)=45

We move all terms to the left:

3(x+7+3)-(45)=0

We add all the numbers together, and all the variables

3(x+10)-45=0

We multiply parentheses

3x+30-45=0

We add all the numbers together, and all the variables

3x-15=0

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

3x=15

x=15/3

x=5

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