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-1/2x-15=-20
We move all terms to the left:
-1/2x-15-(-20)=0
Domain of the equation: 2x!=0We add all the numbers together, and all the variables
x!=0/2
x!=0
x∈R
-1/2x+5=0
We multiply all the terms by the denominator
5*2x-1=0
Wy multiply elements
10x-1=0
We move all terms containing x to the left, all other terms to the right
10x=1
x=1/10
x=1/10
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