50x+70=40x+90

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Solution for 50x+70=40x+90 equation: 



50x+70=40x+90

We move all terms to the left:

50x+70-(40x+90)=0

We get rid of parentheses

50x-40x-90+70=0

We add all the numbers together, and all the variables

10x-20=0

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

10x=20

x=20/10

x=2

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