3*(5+x)=45

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Solution for 3*(5+x)=45 equation: 



3(5+x)=45

We move all terms to the left:

3(5+x)-(45)=0

We add all the numbers together, and all the variables

3(x+5)-45=0

We multiply parentheses

3x+15-45=0

We add all the numbers together, and all the variables

3x-30=0

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

3x=30

x=30/3

x=10

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