15-3x=20-4x

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Solution for 15-3x=20-4x equation: 



15-3x=20-4x

We move all terms to the left:

15-3x-(20-4x)=0

We add all the numbers together, and all the variables

-3x-(-4x+20)+15=0

We get rid of parentheses

-3x+4x-20+15=0

We add all the numbers together, and all the variables

x-5=0

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

x=5

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