Answer:
12/11
Step-by-step explanation:
13y - 15 - 9 + 6y = -3y
19y - 24 = -3y
22y - 24 = 0
22y = 24 / 11
simplify : y = 12/11
Solve for y in first equations
Answer:
x= - 8/5
Step-by-step explanation:
-24x+2=18-14x
-24x+14=18-2
-10x=16
x= - 8/5
R = 89.9-0.7t
fresh coat has a reflectivity of 89.9 percent