8) substitute the 8 in 7/8 x8/1 = 7 (because the 2 8's cancel out) 9)8/9x3/4 = 2/3 (9 and 3 cancel out, 8 and 4 cancel out) 10)1/2x3/10 = 3/20

8.The answer is 89.The answer is 8/910.The answer is 3/20