(4+7+x)+(4+7+x)+(4+7+x)=45

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Solution for (4+7+x)+(4+7+x)+(4+7+x)=45 equation: 



(4+7+x)+(4+7+x)+(4+7+x)=45

We move all terms to the left:

(4+7+x)+(4+7+x)+(4+7+x)-(45)=0

We add all the numbers together, and all the variables

(x+11)+(x+11)+(x+11)-45=0

We get rid of parentheses

x+x+x+11+11+11-45=0

We add all the numbers together, and all the variables

3x-12=0

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

3x=12

x=12/3

x=4

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