Question

(-21) [(-4)+(-6)] = [(-21) (-4)]+[(-21)x(-6)]
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Answer 1

Answer: -210

Step-by-step explanation: This is distributive law of multiplication, so

ax(b+c) = (axb)+(axc).

21 x {(-4) + (-6)} = 21 x -10 = -210.

{21 x (-4)} + {21 x (-6)}= (-84) + (-126)= -84-126 = -210.

Hence,proved.