Substitute the 7 in anywhere there is an x.
49-5=44
91/100 is already in simplest form
first multiply the outside numbers by both the numbers in the ()
10xg=10g 10x5=50 2xg=2g 2x9=18
then combine like terms
10g+50=2g+18
8g=32
then divide
g=4
75 cents is for 1lb
I got that answer because I divided 3.75 and 5 and the I got 75 cents
(4)x5 is the same as (4)5 or 4 x 5
it equals 20
