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2x/(x+7)=3/5
We move all terms to the left:
2x/(x+7)-(3/5)=0
Domain of the equation: (x+7)!=0We add all the numbers together, and all the variables
We move all terms containing x to the left, all other terms to the right
x!=-7
x∈R
2x/(x+7)-(+3/5)=0
We get rid of parentheses
2x/(x+7)-3/5=0
We calculate fractions
10x/(5x+35)+(-3x-21)/(5x+35)=0
We multiply all the terms by the denominator
10x+(-3x-21)=0
We get rid of parentheses
10x-3x-21=0
We add all the numbers together, and all the variables
7x-21=0
We move all terms containing x to the left, all other terms to the right
7x=21
x=21/7
x=3
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