5x+40=7x-20

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Solution for 5x+40=7x-20 equation: 



5x+40=7x-20

We move all terms to the left:

5x+40-(7x-20)=0

We get rid of parentheses

5x-7x+20+40=0

We add all the numbers together, and all the variables

-2x+60=0

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

-2x=-60

x=-60/-2

x=+30

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