12-3/5x=21

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Solution for 12-3/5x=21 equation:



12-3/5x=21
We move all terms to the left:
12-3/5x-(21)=0
Domain of the equation: 5x!=0
x!=0/5
x!=0
x∈R
We add all the numbers together, and all the variables
-3/5x-9=0
We multiply all the terms by the denominator
-9*5x-3=0
Wy multiply elements
-45x-3=0
We move all terms containing x to the left, all other terms to the right
-45x=3
x=3/-45
x=-1/15

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