8x-21-4x=-15

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Solution for 8x-21-4x=-15 equation: 



8x-21-4x=-15

We move all terms to the left:

8x-21-4x-(-15)=0

We add all the numbers together, and all the variables

4x-6=0

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

4x=6

x=6/4

x=1+1/2

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