Answer:
There are two ways to do it.
Get Rid Of Fractions:
r + 2/8 = 3/2
Divide the numerators by the dividends instead of keeping fractions
r + 0.25 = 1.5
Subtract 0.25 from both sides
r = 1.25 or 1 1/4 or 5/4
Keep The Fractions:
r + 2/8 = 3/2
Subtract 2/8 from 3/2
To do this you must find least common denominator
Start by simplifying 2/8
r + 1/4 = 3/2
The LCD is 4 so multiply 3/2 by 2 top and bottom
r + 1/4 = 6/4
Subtract 1/4 from both sides
r = 5/4 or 1 1/4 or in decimal 1.25
Hope this assists you.
From yours truly to you,
Que.