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10x+21=72.00
We move all terms to the left:
10x+21-(72.00)=0
We add all the numbers together, and all the variables
10x+21-72=0
We add all the numbers together, and all the variables
10x-51=0
We move all terms containing x to the left, all other terms to the right
10x=51
x=51/10
x=5+1/10
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