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a) 3/2*5/7=15/14
b) -4/11*1/-3=4/33
c) 3*-7/5=-21/5
d) 5/-4*5/-2=25/8

a. 3/2 x 5/7 = 3x5/ 2x7 = 15/14

b. - 4/11 x 1/-3 = - 4 x 1/ 11 x - 3 = - 4 / -33 = 4/33

c. 3 x -7/5 = - 21/5

d. 5/-4 x 5/ -2 = 5x5 / - 4 x - 2 = 25/8

e. 8/17 x 5/-3 = 8x5 / 17 x - 3 = 40 / - 51 = - 40/51

f. 13/5 x (-2/11) = 13 x - 2 / 5x11 = - 26/55

g.  - 7/15 x (- 8) x 2/3 = 7 x - 8 x2 / 15 x 3 = - 102/45

h. - 1/2 x 5/-4 x - 3/2 = - 1x5x -3 / 2 x - 4 x 2 =  15/ - 16 = - 15/16