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Verify a -(-b) = a + b for the following values of a and b :(i) a = 21, b = 18 (ii) a = 118, b = 125(iii) a = 75, b = 84 (iv) a = 28, b = 11 |
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Answer» (i) Given: a = 21, b = 18 We have a -(-b) = a =+ b Putting the values in L.H.S. = a - (-b) = 21 -(-18) = 21 + 18 = 39 Putting the values in R.H.S. = a + b = 21 + 18 = 39 Since, L.H.S. = R.H.S Hence, verified (ii) Given: a = 118, b = 125 We have a -(-b) = a =+ b Putting the values in L.H.S. = a - (-b) = 118 -(-125) = 118 + 125 = 243 Putting the values in R.H.S. = a + b = 118 + 125 = 243 Since, L.H.S. = R.H.S Hence, verified (iii) Given: a = 75, b = 84 We have a -(-b) = a =+ b Putting the values in L.H.S. = a - (-b) = 75 -(-84) = 75 + 84 = 159 Putting the values in R.H.S. = a + b =75 + 84 = 159 Since, L.H.S. = R.H.S Hence, verified (iv) Given: a =28, b = 11 We have a -(-b) = a =+ b Putting the values in L.H.S. = a - (-b) = 28-(-11) = 28 + 11 = 39 Putting the values in R.H.S. = a + b = 28 + 11 = 39 Since, L.H.S. = R.H.S Hence, verified |
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