2x-(-21)=-3=

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Solution for 2x-(-21)=-3= equation: 



2x-(-21)=-3=

We move all terms to the left:

2x-(-21)-(-3)=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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