13x+21=3x+161

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Solution for 13x+21=3x+161 equation: 



13x+21=3x+161

We move all terms to the left:

13x+21-(3x+161)=0

We get rid of parentheses

13x-3x-161+21=0

We add all the numbers together, and all the variables

10x-140=0

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

10x=140

x=140/10

x=14

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