THIS IS HOW THE PROBLEM ACTUALLY IS PLACED....... 4X+Y=-2........................................................................................ 4X+3Y=-12 how is it that i can go about solving it andget the right answer?thanks MC
2007-12-11 03:35:03 · 4 answers · asked by Michelle C 1 in Science & Mathematics ➔ Mathematics
- 4x - y = 2
4x + 3y = - 12------ADD
2y = - 10
y = - 5
4x - 5 = - 2
4x = 3
x = 3/4
x = 3/4 , y = - 5
2007-12-11 03:41:22 · answer #1 · answered by Como 7 · 2⤊ 0⤋
By subtracting 1st equation from the 2nd you get
2y = -10 y = -5
then by substituting y with -5 in any of equation you get
x = 3/4
2007-12-11 03:40:21 · answer #2 · answered by Maurizio S 2 · 0⤊ 0⤋
subtract the two equation and get y-3y=-2+12
-2y=10
y=-5
x=3/4
2007-12-11 03:39:51 · answer #3 · answered by someone else 7 · 0⤊ 0⤋
x=0.75
y=-5
2007-12-11 03:40:23 · answer #4 · answered by Balint E 1 · 0⤊ 0⤋