7/5r-4=2/5r

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Solution for 7/5r-4=2/5r equation:



7/5r-4=2/5r
We move all terms to the left:
7/5r-4-(2/5r)=0
Domain of the equation: 5r!=0
r!=0/5
r!=0
r∈R
Domain of the equation: 5r)!=0
r!=0/1
r!=0
r∈R
We add all the numbers together, and all the variables
7/5r-(+2/5r)-4=0
We get rid of parentheses
7/5r-2/5r-4=0
We multiply all the terms by the denominator
-4*5r+7-2=0
We add all the numbers together, and all the variables
-4*5r+5=0
Wy multiply elements
-20r+5=0
We move all terms containing r to the left, all other terms to the right
-20r=-5
r=-5/-20
r=1/4

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