Question

2. Verify the following:
(a) 18* [7 +(-3)] = [18 x 7] + [18*(-3)]
(b) (-21)* [(-4)+(-6)] = [(-21)*(-4)] + [(-21)*(-6)]
+​

Answer 1

Step-by-step explanation:

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

18 ×[7 - 3] = 126 + [-54]

18 × 4 = 126 - 54

72 = 72

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

(-21)×[-4-6] = 84 + 126

(-21)×(-10) = 210

210 = 210