6x+9=-4x-21

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Solution for 6x+9=-4x-21 equation:



6x+9=-4x-21
We move all terms to the left:
6x+9-(-4x-21)=0
We get rid of parentheses
6x+4x+21+9=0
We add all the numbers together, and all the variables
10x+30=0
We move all terms containing x to the left, all other terms to the right
10x=-30
x=-30/10
x=-3

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