Question

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

Answer 1

^^" If the question is proof RHS and LHS then answer will be ↓

LHS

[(-21)×[(-4)+(-6)]
= (-21)×[(-4-6)]
= (-21)× (-10)
= 210
now ,

RHS

[(-21)×(-4)]+[(-21)×(-6)]
= 84+126
= 210

hence LHS = RHS
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And if the question need to solve , then answer will be "0"

hopes I helped
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Answer 2

Heya!
Heya!
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Here is your answer :-

I hope your question is about LHS and RHS.. ^^"

LHS

(-21) × [(-4) + (-6)]

= (-21) × [ (-4 - 6) ]

= -21 ( -10 )

= 210

Note : (- × +) = -

RHS

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

= 84 + 126

= 210

Therefore LHS and RHS is equal.

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Hope this helps!