S=3-2r/4+r

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Solution for S=3-2r/4+r equation:



=3-2S/4+S
We move all terms to the left:
-(3-2S/4+S)=0
Domain of the equation: 4+S)!=0
We move all terms containing S to the left, all other terms to the right
S)!=-4
S!=-4/1
S!=-4
S∈R
We add all the numbers together, and all the variables
-(S-2S/4+3)=0
We get rid of parentheses
-S+2S/4-3=0
We multiply all the terms by the denominator
-S*4+2S-3*4=0
We add all the numbers together, and all the variables
2S-S*4-12=0
Wy multiply elements
2S-4S-12=0
We add all the numbers together, and all the variables
-2S-12=0
We move all terms containing S to the left, all other terms to the right
-2S=12
S=12/-2
S=-6

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