s/21-3=2

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Solution for s/21-3=2 equation:



s/21-3=2
We move all terms to the left:
s/21-3-(2)=0
We add all the numbers together, and all the variables
s/21-5=0
We multiply all the terms by the denominator
s-5*21=0
We add all the numbers together, and all the variables
s-105=0
We move all terms containing s to the left, all other terms to the right
s=105

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