Answer:
10, it's 5 less than 5 times 3
Step-by-step explanation:
12.42
12°+.42(60)
12°25.2'
12°25'+.2(60)
12°25'12"
I've included two pictures showing steps on how to solve. Hopefully this helps more than words.
Use elimination
-x - y = -9
x - y = 3
Add both equations
-2y = -6, y = 3
-x -(3) = -9
-x = -6, x = 6
Final answer: x = 6, y = 3