3x+2=-4x+21

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Solution for 3x+2=-4x+21 equation: 



3x+2=-4x+21

We move all terms to the left:

3x+2-(-4x+21)=0

We get rid of parentheses

3x+4x-21+2=0

We add all the numbers together, and all the variables

7x-19=0

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

7x=19

x=19/7

x=2+5/7

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