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0.9x-8.75=21-0.86x
We move all terms to the left:
0.9x-8.75-(21-0.86x)=0
We add all the numbers together, and all the variables
0.9x-(-0.86x+21)-8.75=0
We get rid of parentheses
0.9x+0.86x-21-8.75=0
We add all the numbers together, and all the variables
1.76x-29.75=0
We move all terms containing x to the left, all other terms to the right
1.76x=29.75
x=29.75/1.76
x=16+1/1.10691823899
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