Question

1)
) which of the following is a false
statement ?
a) a + b is a national number
b) - a + a = -1
c) (a+b)+c=a+ (b + c)
d) (a-b)+c=a/c+(-b/c)
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Answer 1

Answer:

2 is false ........................

Answer 2

Answer:

(c) is correct answer.

because bracket causes hear no effect.