Question

89 – (75 – 42) = (89 – 75) - 42 true or not true

Answer 1

Answer:

False

Step-by-step explanation:

Using the commutative property, we know that subtraction is not commutative. Therefore, this statement is false.

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Answer 2

Answer:

The given equation is not true .

Step-by-step explanation:

L.H.S. = 89 - ( 75 - 42 ) = 89 - 33 = 56

R.H.S. = ( 89 - 75 ) - 42 = 14 - 42 = - 28

L.H.S. is not equal to R.H.S.

We can simply write that subtraction does not obey commutative property .

We need not have to prove it because it is already proved .

But if you want you can do by the above process .