3x+2x=15,

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Solution for 3x+2x=15, equation: 



3x+2x=15.

We move all terms to the left:

3x+2x-(15.)=0

We add all the numbers together, and all the variables

3x+2x-15=0

We add all the numbers together, and all the variables

5x-15=0

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

5x=15

x=15/5

x=3

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