(-21)*[(-4)+(-6)]=[(-21)*(-4)]+[(-21)*(-6)]
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verification for distributive property
(-21)*[(-4)+(-6)]=[(-21)*(-4)]+[(-21)*(-6)]
(-21)*[-10]=[84]+[126]
210 =210
(-21)*[(-4)+(-6)]=[(-21)*(-4)]+[(-21)*(-6)]
(-21)*[-10]=[84]+[126]
210 =210
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