3x+15-7x=-5

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Solution for 3x+15-7x=-5 equation: 



3x+15-7x=-5

We move all terms to the left:

3x+15-7x-(-5)=0

We add all the numbers together, and all the variables

-4x+20=0

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

-4x=-20

x=-20/-4

x=+5

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