x+11=3x-15

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Solution for x+11=3x-15 equation: 



x+11=3x-15

We move all terms to the left:

x+11-(3x-15)=0

We get rid of parentheses

x-3x+15+11=0

We add all the numbers together, and all the variables

-2x+26=0

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

-2x=-26

x=-26/-2

x=+13

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