4x+21=6x-3

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Solution for 4x+21=6x-3 equation: 



4x+21=6x-3

We move all terms to the left:

4x+21-(6x-3)=0

We get rid of parentheses

4x-6x+3+21=0

We add all the numbers together, and all the variables

-2x+24=0

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

-2x=-24

x=-24/-2

x=+12

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