x+(2x)+(x+3)=75

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Solution for x+(2x)+(x+3)=75 equation: 



x+(2x)+(x+3)=75

We move all terms to the left:

x+(2x)+(x+3)-(75)=0

We add all the numbers together, and all the variables

3x+(x+3)-75=0

We get rid of parentheses

3x+x+3-75=0

We add all the numbers together, and all the variables

4x-72=0

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

4x=72

x=72/4

x=18

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