Question

Which of the following is not the additive inverse of a?
(a) -(-a)
(b) ax (-1)
(c) -a
(d) a÷(-1)...... please help me Bhai Didi Meri help kro please mai 7 class mai hu.......​

Answer 1

Answer:

A) -(-a)

addititve inverse is the number when added to a given number will yield zero. The additive inverse of 2 is −2.

suppose y and z are additive inverses of x. Then y = y + 0 = y + (x + z) = (y+x)+z = 0 + z = z. Remark: Of course the additive inverse of x equals (-1)x. To prove this, since we know that the additive inverse is unique, it is enough to show that (-1)x is an additive inverse of x, i.e. that x+(-1)x=0.

here,

a-(-a) = a+a ≠ 0

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Answer 2

Answer:

The answer is :

(a)

-(-a)