Question

Verify-a-b= -(a+b) for the following values of a and b.

(I) a=2, b=5

(ii) a=3,b=10​

Answer 1

Answer:

$- 2 - 5 = - (2 + 5) \\ - 7 = - (7) \\ - 7 = - 7 \\ \\ - 3 - 10 = - (3 + 10) \\ - 13 = - (13) \\ - 13 = - 13$

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Answer 2

to verify,

-a-b= -(a+b)

(i) substitute the value of a and b in the given equation

-a-b= -(a+b)

-2-5= -(2+5)

-7= -(7)

so,

-7= -7

hence verified

(ii) substitute the value of a and b in the given equation

-a-b= -(a+b)

-3-10= -(3+10)

-13= -(13)

so

-13= -13

hence verified