Question

$\huge\red{Question}$

Verify the following:-

(a) 18 × [7 + (–3)] = [18 × 7] + [18 × (–3)].

(b) (–21) × [(– 4) + (– 6)] = [(–21) × (– 4)] + [(–21) × (– 6)].​

Answer 1

Answer:

(a) 18 × [7 + (–3)] = [18 × 7] + [18 × (–3)]

18 × [4] = [18 × 7] + [–54]

18 × [4] = 126 –54

72=72

LHS=RHS

hence verified!

(b) (–21) × [(– 4) + (– 6)] = [(–21) × (– 4)] + [(–21) × (– 6)]

(–21) × (-10) = 84 +126

210 = 210

LHS = RHS

hence verified !

ueqtuktzsg

Answer 2

Answer:

(a) 18 × [7 + (-3)] = [18 × 7] + [18 × (-3)]

18 × [7 -3] = [18 × 7] + [18 × (-3)]

18 × [4] = [18 × 7] + [18 × (-3)]

72 = 126 -54

72 = 72

LHS = RHS

Hence, verified!

(b) (-21) × [(-4) + (-6)] = [(-21) × (-4)] + [(-21) × (-6)]

(-21) × [(-4 -6)] = [(-21) × (-4)] + [(-21) × (-6)]

(-21) × [-10] = [(-21) × (-4)] + [(-21) × (-6)]

210 = 84 + 126

210 = 210

LHS = RHS

Hence, verified!

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