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8x-x=77.84+3x
We move all terms to the left:
8x-x-(77.84+3x)=0
We add all the numbers together, and all the variables
8x-x-(3x+77.84)=0
We add all the numbers together, and all the variables
7x-(3x+77.84)=0
We get rid of parentheses
7x-3x-77.84=0
We add all the numbers together, and all the variables
4x-77.84=0
We move all terms containing x to the left, all other terms to the right
4x=77.84
x=77.84/4
x=19+1/2.1739130434783
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