if p=-5+6 andq=-7+6 and r=13+16 verify that (p+q)+r=(q+r)

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Solution

Dear student
$G i v e n : p = - 5 + 6 = 1 q = - 7 + 6 = - 1 r = 13 + 16 = 29 N o w T o v e r i f y : (p + q) + r = p + (q + r) L H S = (p + q) + r = (1 + (- 1)) + 29 = (1 - 1) + 29 = 29 R H S = p + (q + r) = 1 + (- 1 + 29) = 1 + 28 = 29 T h e r e f o r e, L H S = R H S H e n c e v e r i f i e d$
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