4x-7=x+2=20=13

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Solution for 4x-7=x+2=20=13 equation: 



4x-7=x+2=20=13

We move all terms to the left:

4x-7-(x+2)=0

We get rid of parentheses

4x-x-2-7=0

We add all the numbers together, and all the variables

3x-9=0

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

3x=9

x=9/3

x=3

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