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3/10(x)=12
We move all terms to the left:
3/10(x)-(12)=0
Domain of the equation: 10x!=0We multiply all the terms by the denominator
x!=0/10
x!=0
x∈R
-12*10x+3=0
Wy multiply elements
-120x+3=0
We move all terms containing x to the left, all other terms to the right
-120x=-3
x=-3/-120
x=1/40
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