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Salman solves -3 -4 = +7. The error is c...

Salman solves -3 -4 = +7. The error is committed as

A

Salman is not clear about the concept of addition of integers

B

Salman needs to practise solving problems of similar type

C

Salman has not understood the concept of multiplication of integers

D

Salman is careless

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The correct Answer is:
A
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