Question

4. Add the following
(i) 16+7
(ii) 16+(-7
(iv) 0+(-187)
(v) -25+
5. Subtract:
(i) 20-20
(ii) 20-
(iv) 40-(-42)
(v) 40-6
6. Evaluate -x (or additive inverse of x) f
(i) x=-6
(ii) x =10
(iv) x=8
(v) x=-
Yorify (a + b)+c=a +(b + c) for each​

Answer 1

Answer:

q no.4 - 1. 23

2. 9

hope this will help you.