20x-40=10x+30=180

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Solution for 20x-40=10x+30=180 equation: 



20x-40=10x+30=180

We move all terms to the left:

20x-40-(10x+30)=0

We get rid of parentheses

20x-10x-30-40=0

We add all the numbers together, and all the variables

10x-70=0

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

10x=70

x=70/10

x=7

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