Question

if a = -9 b = -6 show that (a-b) does not equals (b-a)
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Answer 1

Answer:

LET A - B = -9 - (-6)

A-B = -9+6

A-B = -3 .......... EQUATION 1

NOW B-A = -6 - (-9)

B-A = -6 + 9

B-A = 3 ......... EQUATION 2

BY 1 AND 2 CLEARLY

B-A NOT EQUAL TO A-B

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Answer 2

Solution:

Substitute the values of a and b in

a-b=-9+6=-3 ... (1)

b-a=-6+9=3 ...(2)

From (1) and (2)

-3≠3

Therefore, a-b≠b-a