how do u answer thiz....real fast
9 6/7 x 17 1/2=
2007-08-23 06:38:19 · 3 answers · asked by ? 4 in Science & Mathematics ➔ Mathematics
convert to common denominator;
(9 * 14 + 12)(17 * 14 + 7) / (14^2)
(138 * 245) / (14^2)
33810 / 196
172 1/2
2007-08-23 06:43:48 · answer #1 · answered by Anonymous · 1⤊ 1⤋
Convert to all fraction form:
69/7 x 35/2
now multiply 69 x 35 =2415
and 7 x 2 = 14
answer 2415/14 = 172 1/2
2007-08-23 13:59:55 · answer #2 · answered by Ilya S 3 · 0⤊ 0⤋
Convert to complex fraction
9x7=63
63+6=69
69/7
17x2=34
34+1=35
35/2
69/7 x 35/2
7 cancels, 35 becomes 5
So it just becomes 69 x 5/2
69x5 can be done easily...either just multiply it directly or think
7x5=35, so 70x5=350, so 69x5=350-5=345
And it just becomes 345/2.
2007-08-23 13:45:12 · answer #3 · answered by Red_Wings_For_Cup 3 · 0⤊ 0⤋