3x-21+8=2x-15

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Solution for 3x-21+8=2x-15 equation: 



3x-21+8=2x-15

We move all terms to the left:

3x-21+8-(2x-15)=0

We add all the numbers together, and all the variables

3x-(2x-15)-13=0

We get rid of parentheses

3x-2x+15-13=0

We add all the numbers together, and all the variables

x+2=0

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

x=-2

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