Question

.Verify i)18x[7+(-3)]=[18x7]+[18x(-3)]

ii)(-21)x[(-4)+(-6)]=[(-21)x(-4)]

Answer 1

1) solve bracket in LHS
18 X [4]=[126]+[-54]
72= 126-54
72=72

2) (-21)X[-10]=84
210 is not equal to 84

Answer 2

(i) 18 × [7 + (-3)] = [18 × 7] + [18 ×(-3)]
18 × [4] = [126] + [-54]
72 = 126 - 54
72 = 72
•°• L.H.S. = R.H.S.
(ii) (-121) × [(-4) + (-6)] = [(-121) ×(-4)] +
[(-121) × (-6)
(-121) × [-10] = [484] + [726]
1210 = 1210