6.5 ANSWERS supporting path
Answers exercise 1:
Simplify
a) 7x + 2x
= 9x
b) 8y - 3y
= 5y
c) 4a - a
= 4a - 1a
= 3a
d) 19q - 6b
= 19q - 6b
or
= n.a. (no answer)
e) 7b + 10b - 3b
= 17b - 3b
= 14b
f) -8m - 5m - 9m
= - 18m - 9m
= -27m
g) 2g + 8u - 19g - - 11u
= 2g + 8u -19g + 11u
= -17g + 19u
h) a - b + a + b
= a - b + a+ b
= 2a
Answer exercise 2