2007-11-16 03:14:36 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
6 y = 18 - 5 x
y = (1 / 6) ( 18 - 5 x )
y = (1 / 6) ( 18 - 60 )
y = (1 / 6) ( - 42 )
y = - 7
2007-11-16 04:34:18 · answer #1 · answered by Como 7 · 2⤊ 1⤋
5x + 6y = 18
so
6y = 18 - 5x
If x = 12
then
6y = 18 - (5 x 12)
so
6y = 18 - 60
6y = -42
y = -7
2007-11-16 11:19:45 · answer #2 · answered by d_rice1979 2 · 0⤊ 0⤋
If x = 12,
Sub x=12 into 5x+6y=18
5(12)+6y=18
60+6y=18
6y=18-60
6y=-42
y=-42/6
y=-7
Thats how you get the answer
2007-11-16 11:22:21 · answer #3 · answered by KoLa 2 · 0⤊ 0⤋
5x +6y = 18
5(12) +6y = 18
60 + 6y = 18
-60 -60
6y = -42
y=-7
2007-11-16 11:19:53 · answer #4 · answered by K.Rams 2 · 0⤊ 0⤋
5x + 6y = 18
5(12) + 6y = 18
5(2) + y = 3
10 + y = 3
y = - 7
Answer: y = - 7
Proof:
5(12) + 6(- 7) = 18
60 - 42 = 18
18 = 18
2007-11-16 11:34:05 · answer #5 · answered by Jun Agruda 7 · 2⤊ 1⤋
5x+6y=18for y
x=12.?
5x + 6y = 18
6y = 18 -5x
y =( 18 -5x )/6
when x = 12
y = (18 -12*5 )/6 =
(18-60)/6=
-42/6=
-7
when x = 12
y = -7
Answer: y = -7
*still confused? write back
2007-11-16 16:37:41 · answer #6 · answered by john_lu66 4 · 0⤊ 1⤋
y= -7
2007-11-16 11:22:43 · answer #7 · answered by heyjoe 2 · 0⤊ 1⤋
5x+6y=18
6y=18-5x
y=18-5x/6
y=18-5(12)/6
y=-42/6
y=-7
2007-11-16 11:25:16 · answer #8 · answered by meangreene117 1 · 0⤊ 1⤋
5x+6y=18
6y=18-5x
y=(18-5x)/6
y=(18-(5*12))/6
y=(18-60)/6
y=-42/6
Y= -7
2007-11-16 11:26:57 · answer #9 · answered by Garon Whited 3 · 0⤊ 1⤋
-7
6y=18-60
6y=-42
y=-7
2007-11-16 11:19:11 · answer #10 · answered by Anonymous · 0⤊ 0⤋