could someone please help solve by substitution 8x-3y=-88

Question

4x+48=y

Answer 1

8 x - 3 y = -88

8 x - 3 (4 x + 48) = -88

8 x - 12 x - 144 = -88

-4 x = 56

x = -14

then get y

Answer 2

x 30 sec or .5 min
y 60 sec or 1 min

x + y = 14

.5 x + y = 11
---------------- subtract
.5 x + 0 y = 3
x = 6
y = 14-x = 8
----------------------------
----------------------------
check
6*.5 + 8 = 3+8 = 11

Answer 3

Post new questions as new questions, not under your old one. Otherwise they will be missed.

Answer 4

Sorry, Damon. I removed her question here while you were answering it. I've reposted your answer above.