3x-4=-21

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Solution for 3x-4=-21 equation: 



3x-4=-21

We move all terms to the left:

3x-4-(-21)=0

We add all the numbers together, and all the variables

3x+17=0

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

3x=-17

x=-17/3

x=-5+2/3

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