2x + 24y = -176
11x + 6y = 40
2007-11-29 13:55:06 · 4 answers · asked by derrim2000 1 in Science & Mathematics ➔ Mathematics
2x + 24y = - 176
-44x - 24y = - 160------ADD
- 42x = - 336
42x = 336
6x = 48
x = 8
16 + 24y = - 176
24y = - 192
y = - 8
x = 8 , y = - 8
2007-11-29 21:37:55 · answer #1 · answered by Como 7 · 3⤊ 1⤋
2x + 24y= -176 => 2x + 24y= -176
-4(11x = 6y= 40) => -44x- 24y = -160
-42x = -336
x = 8
2x + 24y = -176
2(8) +24y = -176
16 +24y = -176
24y = -192
y = -8
final answer: (8,-8)
2007-11-29 22:03:29 · answer #2 · answered by Anonymous · 1⤊ 1⤋
you don't add the equations until you have made one set of like variables have opposite coefficients. I would multiply the second equation by -4 to get a -24 on the y
2x + 24y = -176
-44x - 24y = -160
now add
-42x = -336
x = 8
the subbing 8 in for x in one of original equations, find y
2007-11-29 21:59:27 · answer #3 · answered by Linda K 5 · 1⤊ 1⤋
multiply 2nd equation by -4. then add the equations.
-42x=-336
x=8
plug in 2nd equation to get y
y=-8
2007-11-29 22:02:02 · answer #4 · answered by catsfanj 3 · 1⤊ 0⤋