21=7/4y

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Solution for 21=7/4y equation:



21=7/4y
We move all terms to the left:
21-(7/4y)=0
Domain of the equation: 4y)!=0
y!=0/1
y!=0
y∈R
We add all the numbers together, and all the variables
-(+7/4y)+21=0
We get rid of parentheses
-7/4y+21=0
We multiply all the terms by the denominator
21*4y-7=0
Wy multiply elements
84y-7=0
We move all terms containing y to the left, all other terms to the right
84y=7
y=7/84
y=1/12

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