(4-r)=1/2

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Solution for (4-r)=1/2 equation: 



(4-r)=1/2

We move all terms to the left:

(4-r)-(1/2)=0

We add all the numbers together, and all the variables

(-1r+4)-(+1/2)=0

We get rid of parentheses

-1r+4-1/2=0

We multiply all the terms by the denominator


-1r*2-1+4*2=0

We add all the numbers together, and all the variables

-1r*2+7=0

Wy multiply elements

-2r+7=0

We move all terms containing r to the left, all other terms to the right

-2r=-7

r=-7/-2

r=3+1/2

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