5x-4=7x+21

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Solution for 5x-4=7x+21 equation: 



5x-4=7x+21

We move all terms to the left:

5x-4-(7x+21)=0

We get rid of parentheses

5x-7x-21-4=0

We add all the numbers together, and all the variables

-2x-25=0

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

-2x=25

x=25/-2

x=-12+1/2

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