5/7 of 112 is 80.
x/80 + 7 = 12 x/80 = 5 x = 80 x 5 = 400
(4/5)/(16/7) = (4/5)x(7/16) = 28/80 = 7/20
LCM of 10 & 16 is 80 so (7 x 8)/80 + (9 x 5)/80 = 56/80 + 45/80 = 101/80 = 1 and 21 over 80
is 5 over 7 a rational number
7 over 80 reduced to in a fraction = 7/80
5/7 is a real number and a rational number.
5/9 + 5/7 = 35/63 + 45/63 = 80/63 or 1 20/63
40/7 = 5 and 5/7.
I have no clue
Make the lower number the same 0.7 = 7/10 = 56/80 5/8 = 50/80 so 0.7 is larger than 5/8 (as 56 is larger than 50)
7 and 29 over 80 as a decimal would be7.29over 80