if a =(21) and b=(-7, show that (a-b) not equal to(b-a)
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Answered by
2
(a-b)≠(b-a)
(a-b)+(a+b)≠(b-a)+(a+b)
2a≠2b
a≠b
Answered by
1
Answer:
21-(-7)
21+7-28
_7-21_-28
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