Question

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 = 75, b = 11.`

Answer 1

(i) `a = 21, b = 18`
So, `a - (-b) = 21-(-18) = 21+18 = 39`
`a+b = 21+18 = 39`
`:. a - (-b) = (a+b)`

(ii)` a = 118, b = 125`
So, `a - (-b) = 118-(-125) = 118+125 = 243`
`a+b = 118+125 = 243`
`:. a - (-b) = (a+b)`

(iii)`a = 75, b = 84`
So, `a - (-b) = 75-(-84) = 75+84 = 159`
`a+b = 75+84 = 159`
`:. a - (-b) = (a+b)`

(iv)`a = 75, b = 11`
So, `a - (-b) = 75-(-11) = 75+11 = 86`
`a+b = 75+11 = 86`
`:. a - (-b) = (a+b)`