Answer:
18.4
Step-by-step explanation:
Answer: the answer is 4.5
1/4 or 0.25
Lets plug x and y into the equation. We now have 3/12, which would be equal to 1/4 or 0.25
a = -10
-0.4a + 3 = 7
subtract 3 from each side
-0.4a + 3-3 = 7-3
-.4a = 4
Divide each side by -.4
-.4a/ -.4 = 4/-.4
a = - 10