Multiply the numerator and denominator by the whole number. you'll most likely get an improper fraction though.
7x+7b = 7(x+b)
..............
simplify each term
apply the distributive property
-X+3+(-X- -5)
multiple -1 by -5
-X+3+(-x+5)
remove unnecessary parentheses
-x+3-×+5
subtract x from -x
-2x+3+5
add 3 and 5.
-2x+8
That is a good definition
