Asked by babs

could someone please help solve by substitution 8x-3y=-88
4x+48=y
Answered by Damon
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
Answered by Damon
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



Answered by Damon
Post new questions as new questions, not under your old one. Otherwise they will be missed.
Answered by Ms. Sue
Sorry, Damon. I removed her question here while you were answering it. I've reposted your answer above.

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