5x-7=40x+21

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Solution for 5x-7=40x+21 equation: 



5x-7=40x+21

We move all terms to the left:

5x-7-(40x+21)=0

We get rid of parentheses

5x-40x-21-7=0

We add all the numbers together, and all the variables

-35x-28=0

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

-35x=28

x=28/-35

x=-4/5

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