8+(-7) 16. (3-(-4)*7, when x = 3 when s= -3 -1 2a. W+(-7), when w=-1 2b. -4v when v=-7 and c= -2 3 a -50 + (-6)u-3, when d= 2 and u=7 3b. d. when q=-10 4 a. (109 - 4), when q = 7 4b. (56-(-6))?, when b=0 5a. 7p+5 5 6.69-9. when q = 4 and g = 1 when p= -3 -5 4 8a 9-1-(-1), when q= 1 and r = 7 6 b. b-n-8, when b= -3 and n=5 72. d(-7 - s), when d = -5 and s= -2 7 b. p-C, when p= -3 and c= 8​

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