.68
.................................................
Answer:
r= 15
Step-by-step explanation:
4a + 3b - a - 5b
First, gather the like terms.
Second, subtract 4a - a to get 3a.
Third, subtract 3b - 5b to get 2b.

Answer:
3a - 2b
Answer:
2/21 :)
Step-by-step explanation: