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75-1/5x=220
We move all terms to the left:
75-1/5x-(220)=0
Domain of the equation: 5x!=0We add all the numbers together, and all the variables
x!=0/5
x!=0
x∈R
-1/5x-145=0
We multiply all the terms by the denominator
-145*5x-1=0
Wy multiply elements
-725x-1=0
We move all terms containing x to the left, all other terms to the right
-725x=1
x=1/-725
x=-1/725
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