ICSE Class 7 Answered
Verify(a+b)+c =a(b+c) for each of the following.
a) a=0, b=-19, c=-27
b)a=-138, b=-39, c=57.
Asked by shreyasonar94.7spicertl | 17 Jun, 2020, 06:50: PM
Expert Answer
(i) a = 0, b = -19, c = -27
(a+b)+c = [0+(-19)]+(-27) = -19 - 27 = -46
a+(b+c) = 0+[-19+(-27)] = -19 - 27 = -46
Therefore, (a+b)+c = a+(b+c)
(ii) a = -138, b = -39, c = 57
(a+b)+c = [-138+(-39)]+57 = -138 - 39 + 57 = -177 + 57 = -120
a+(b+c) = -138+[(-39)+57] = -138 + 18 = -120
Answered by Renu Varma | 18 Jun, 2020, 10:42: AM
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