Answer:
y = 3
Step-by-step explanation:
-5y + 8 = -7
subtract 8 from both sides
-5y = -15
now, divide -5 from both sides
y = 3
Step-by-step explanation:

that's it
Answer:
A 1/4
Step-by-step explanation:
2/3 x = 1/6
2x/3 = 1/6
2x/3 = 1/2x3
The answer is 1/4
Let's say, the amount that each side was increased was "a"
so, it was 5 wide and 12 long, now it's 5+a wide and 12+a long
we know the area is 120, so whatever "a" is, we know that
(5+a)(12+a) = 120
so

use those factors, solve for "a"