1x+2x+(3+x)=42

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Solution for 1x+2x+(3+x)=42 equation: 



1x+2x+(3+x)=42

We move all terms to the left:

1x+2x+(3+x)-(42)=0

We add all the numbers together, and all the variables

1x+2x+(x+3)-42=0

We add all the numbers together, and all the variables

3x+(x+3)-42=0

We get rid of parentheses

3x+x+3-42=0

We add all the numbers together, and all the variables

4x-39=0

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

4x=39

x=39/4

x=9+3/4

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