(а)
(b) (-21) × [(-4) + (-6)] = [(-21)× (-4)] + [(-21) ×(-6)
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Step-by-step explanation:
(-21)×[(-4) + (-6)] = [(-21) × (-4)] + [(-21) × (-6)
(-21) × (-10) = 84 + 126
210 = 210
Hope this helps.....
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