$14.20 is the cost of each book
Answer:
4
Step-by-step explanation:
-2x- 4 + 5x = 8
Collect like terms
-2x + 5x = 8 +4( when a variable crosses over equality sign it becomes either negative or positive depending on the sign)
3x = 12
Divide via by coefficient of x
X = 12/3
= 4
X=-3
7+4x=-5
-7 -7
4x=-12
/4. 4/
X=-3
4x4x4=64. Hope that helps
2x +9 = 3x - 1
2x - 3x = -9 -1
-x = -10
x = 10
2(10) + 9 = 29
so angles 1 and 3 measure 29 degrees
360 - 2(29) = 302 degrees
302/2 = 151 degrees
so angles 1 and 3 measure 151 degrees
