Answer:
12a - 6b
Step-by-step explanation:
Given
8a + 3b + 4a - 9b ← collect like terms
= (8a + 4b) + (3b - 9b)
= 12a + (- 6b)
= 12a - 6b
Answer:
Step-by-step explanation:
8
−
(
−
12
)
Multiply
−
1
by
−
12
.
−
8
+
12
Add
−
8
and
12
.
4
Answer:
6/4
Step-by-step explanation:
All second numbers are divisible by 3 except for this ratio