21=4x+2-5

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Solution for 21=4x+2-5 equation: 



21=4x+2-5

We move all terms to the left:

21-(4x+2-5)=0

We add all the numbers together, and all the variables

-(4x-3)+21=0

We get rid of parentheses

-4x+3+21=0

We add all the numbers together, and all the variables

-4x+24=0

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

-4x=-24

x=-24/-4

x=+6

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