8x-4=21

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Solution for 8x-4=21 equation: 



8x-4=21

We move all terms to the left:

8x-4-(21)=0

We add all the numbers together, and all the variables

8x-25=0

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

8x=25

x=25/8

x=3+1/8

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