1.

Verify the following : (a) 18 × [7 + (-3)] = [18 × 7] + [18 × (-3)] (b) (-21) × [(-4) + (-6)] = [(-21) × (-4)] + [(-21) × (-6)]

Answer»

(a) 18 × [7 – 3] = [126] + [18 × -3] 

18 × [4] = 126 + [-54] 

72 = 72 (verified) 

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

-21 × -10 = [84] + [126] + 210 = 210 

LHS = RHS (verified)



Discussion

No Comment Found