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:
i think b or c
Step-by-step explanation:
i tryed sorry if they or one
wrong
With 3 you will have 9pi
With 13 you will have 169pi
So 169/9 so 18,8
Answer:
(x, y) =(2,2)
Step-by-step explanation:
5x+3y=16 /*5
3x-5y=-4 /*3
25x+15y=80 (1)
9x-15y=-12 (2)
(1)+(2): 34x=68
9x-15y=-12
x=68/34
9x-15y=-12
x=2
9*2-15y=-12
x=2
18-15y=-12
x=2
-15y=-12-18
x=2
-15y=-30
x=2
y=-30/(-15)
x=2
y=2
(x,y)=(2,2)
Answer:
37, 39
Step-by-step explanation:
n + 1/3 (n + 2) = 50
Multiply both sides by 3 to cancel out the 1/3:
3n + (n + 2) = 150
Simplify:
4n + 2 = 150
4n = 148
n = 37
n + 2 = 39