3x+20-x=4x-5

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Solution for 3x+20-x=4x-5 equation: 



3x+20-x=4x-5

We move all terms to the left:

3x+20-x-(4x-5)=0

We add all the numbers together, and all the variables

2x-(4x-5)+20=0

We get rid of parentheses

2x-4x+5+20=0

We add all the numbers together, and all the variables

-2x+25=0

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

-2x=-25

x=-25/-2

x=12+1/2

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