verify( -2)*[(-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
L.H.S = R.H.S
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