Question

verify 21×[8+(-2)]=21×8+21×(-2)
please tell step by step​

Answer 1

Step-by-step explanation:

SOLUTION

SOLUTIONTO VERIFY

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

CONCEPT TO BE IMPLEMENTED

CONCEPT TO BE IMPLEMENTEDDistributive PROPERTY

For there real numbers a, b, c

ax (b + c) = (a x b) + (ax c)

EVALUATION

We have to verify

(-21)×[(-4)+(-6)]

=[(-21) × (-4)]+[(-21) × (-6)]

ax (b + c) = (a x b) + (ax c) X

LHS

= (-21)×[(-4) + (-6)]

= (-21) × (-10) [ Distributive Property]

= 210

RHS

[(-21) × (-4)]+[(-21) × (-6)]

= 84 +126

= 210

Therefore LHS = RHS

Answer 2

Answer:

class 7th question verify 21×[8+(-2)]=21×8+21×(-2)