Question

Verify a-(-b) = a +b for a = 20 b = 18​

Answer 1

Answer:

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Answer 2

Answer:

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

(iii) a = 75, b = 84

a – (-b) = 75 – (- 84)

75 – (- 84) = 75 + 84 =159

a + b = 75 + 84

75 + 84 =159

75 – (- 84) = 75 + 84 =159

(iv) a = 28, b = 11

a – (-b) = 28 – (-11)

28 – (-11) = 28 + 11 = 39

a + b = 28 + 11= 39

28 +11= 39

28 – (-11) = 28 +11= 39