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b)... = -22/7 * 1/11 = -2/7
c) ...= 9/4 *-2/3 =-3/2 = - 1 1/2
d)...= 3.89
e) ... = 0.64
f) ... = 0.6
g...= 11/3* -5/10 =-55/30 =-1 25/30 =-1 5/6
h) ... = 23/10 - 1/3 = 69/30 - 10/30 = 59/30 = 1 29/30
i)... = -375/100 : - 125/100 = - 375/100 * - 100/125 = 3
j) ... = 1/3 *-10/ 7 =-10/21