Question

Verify a – (-b) = a + b for the following values of a and b. i) a = -17 b = +15 ii) a = 50 b = 21

Answer 1

(i) Given that a=-17 and b=15
To verify a-(-b)=a+b
=-17-(-15)=-17+15
= -17+15=-2
= -2 = -2
Hence verified a-(-b)= a+b


(ii) Given that a=50 b=21
To prove a-(-b)= a+b
=50-(-21)=50+21
=50 +21=50+21
=71=71
Hence verified a-(-b)=a+b

Answer 2

Answer:

The values of

i) a = -17 and b = +15  is -2.

ii) a = 50 and b = 21 is 71.

Step-by-step explanation:

Given:

a - (-b) = a + b

i) a = -17 and b = +15

ii) a = 50 and b = 21

To find:

the values of a and b

(i) Given:  a = -17 and b = 15

If a = -17 and b = +15

LHS = RHS

a - (-b) = a + b

-17 - (-15) = -17 + 15

-17 + 15 = -2

-2 = -2

LHS = RHS

(ii) Given that a = 50 and b = 21

If a = 50 and b = 21

LHS = RHS

a - (-b) = a + b

50 - (-21) = 50 + 21

50 + 21 = 50 + 21

71 = 71

LHS = RHS

Hence Verified

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