Question

if a=(-21) and b=(-7 show that (a-b) not equal to (b-a)

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Answer 1

Answer:

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Step-by-step explanation:

GIVEN:

a=(-21) and b=(-7)

TO SHOW:

(a-b) not equal to (b-a)

PROOF:

FIRST CASE:

(a-b)

= (-21)-(-7)

= -21+7

=-14

SECOND CASE:

(b-a)

=(-7) -(-21)

=-7+21

=14.

HENCE (a-b) not equal to (b-a)

Answer 2

Step-by-step explanation:

a = -21

b =-7

a-b= -21-(-7)

=-21+7

= -14

b-a= -7-(-21)

= -7+21

= 14

-14 is not equal to 14

Hence, a-b=b-a