3+8x-16=-21

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Solution for 3+8x-16=-21 equation: 



3+8x-16=-21

We move all terms to the left:

3+8x-16-(-21)=0

We add all the numbers together, and all the variables

8x+8=0

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

8x=-8

x=-8/8

x=-1

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