6.5 ANSWERS normal path
Simplify
a) 8y - 3y
= 5y
b) 4a - a
= 4a - 1a
= 3a
c) 19q - 6b
= 19q - 6b
or
= no answer (n.a.)
d) 7b + 10b - 3b
= 17b - 3b
= 14b
e) -8m - 5m - 9m
= -13m -9m
= -22m
f) 2g + 8u - 19g - - 11u
= 2g + 8u - 19g + 11u
= -17g + 19u
g) a - b + a + b
= a - b + a + b
= 2a
h) 2q + 6u - 2q - 6u
= 2q + 6u - 2q - 6u
= 0
Answers exercise 2: