Question

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

One has been done for you

Example on How to do: $a = 21, b= 18$

Answer: Consider LHS

$a-(-b)$ ⇒ 1

Substitute the value of $a$ and $b$ = 21 - (-18) = 21 + (18) = 39

Consider RHS

$a+b=21+18=39$

∴ LHS = RHS = 39

$a-(-b)=a+b$

Hence Verified


Q1. $a=20, b=13$

Q2. $a=38,b=19$

Answer 1

Answer:

(i) a = 21, b = 18

a – (-b)  = 21-(-18)

21-(-18) = 21 + 18

21+18= 39

a + b = 21+18

21+18 = 39

21-(-18) = 21+18 = 39

(ii) a = 118, b = 125

a – (-b)  = 118 – (- 125)

118- (- 125) = 118 + 125 = 243

a + b = 118 + 125

118 + 125 = 243

118 – (- 125) = 118 + 125 = 243

Step-by-step explanation:

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Answer 2

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