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3/4x-21=21
We move all terms to the left:
3/4x-21-(21)=0
Domain of the equation: 4x!=0We add all the numbers together, and all the variables
x!=0/4
x!=0
x∈R
3/4x-42=0
We multiply all the terms by the denominator
-42*4x+3=0
Wy multiply elements
-168x+3=0
We move all terms containing x to the left, all other terms to the right
-168x=-3
x=-3/-168
x=1/56
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