Question

Now can’t you do these?

(i) −4 + (−1)

(ii) −6 + (−4)

(iii) −12 + (−8)

(iv) −8 + (−10)

(v)

Answer 1

We know that for any two positive numbers x, y, we have − x − y = − (x + y)

(i) −4 + (−1) = −4 −1

= − (4 + 1)

= −5

(ii) −6 + (−4) = −6 − 4

= − (6 + 4)

= −10

(iii) −12 + (−8) = −12 − 8

= − (12 + 8)

= −20

(iv) −8 + (−10) = −8 − 10

= − (8 + 10)

= −18

(v)