20x-100=5x-20=3x+40

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Solution for 20x-100=5x-20=3x+40 equation: 



20x-100=5x-20=3x+40

We move all terms to the left:

20x-100-(5x-20)=0

We get rid of parentheses

20x-5x+20-100=0

We add all the numbers together, and all the variables

15x-80=0

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

15x=80

x=80/15

x=5+1/3

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