15x-20=-5x+40

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Solution for 15x-20=-5x+40 equation: 



15x-20=-5x+40

We move all terms to the left:

15x-20-(-5x+40)=0

We get rid of parentheses

15x+5x-40-20=0

We add all the numbers together, and all the variables

20x-60=0

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

20x=60

x=60/20

x=3

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