3x=42-10x

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Solution for 3x=42-10x equation: 



3x=42-10x

We move all terms to the left:

3x-(42-10x)=0

We add all the numbers together, and all the variables

3x-(-10x+42)=0

We get rid of parentheses

3x+10x-42=0

We add all the numbers together, and all the variables

13x-42=0

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

13x=42

x=42/13

x=3+3/13

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