Solve the second equation for y so that you can substitute it in for y in the first equation..
y = 5x - 4
Substitute:
3x + (5x - 4) = 1
Answer:
-3
Step-by-step explanation:

Proportional mate try that maybe then
The answer is 16 if you solve it, because the square root of 64 is 8 and 2 * 8 = 16
Given that the minute hand is at exactly 12hrs there is a difference of 5 hours in between so you multiply 5over 12 by 360degrees and you get 180degrees
5/12*360=150