y+3x=2
-3y+2x= -6
2006-07-18 03:34:31 · 7 answers · asked by Brandon ツ 3 in Science & Mathematics ➔ Mathematics
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2006-07-18 03:34:58 · update #1
y + 3x = 2
-3y + 2x = -6
y + 3x = 2
y = -3x + 2
-3(-3x + 2) + 2x = -6
9x - 6 + 2x = -6
7x - 6 = -6
7x = 0
x = 0
y = -3(0) + 2
y = 0 + 2
y = 2
x = 0
y = 2
2006-07-18 04:38:54 · answer #1 · answered by Sherman81 6 · 3⤊ 1⤋
multiple 3 times everything in the top
3(y) + 3(3x) = 3(2) which gives you 3y + 9x = 6 and add that to -3y + 2x = -6....
x = 0....plug in x = 0 and you get y = 2
2006-07-18 10:41:38 · answer #2 · answered by thaKing 4 · 0⤊ 0⤋
y+3x = 2 mean y = 2 - 3x (1)
-3y + 2x = -6 plug in (1) gives:
-3(2-3x)+2x=-6
11x -6 = -6
11x = 0 ==> x = 0 ==> y = 2-0 = 2
(x,y) = (0,2)
2006-07-18 10:40:43 · answer #3 · answered by cw 3 · 0⤊ 0⤋
multipy with 3 to the first equation
3y+9x=6
-3y+2x= -6.....on adding these two equations 11x=0 => x=0.
y+3(0)=2( substuting x=0 in first eqn)
y=2.
there fore x=0,y=2
2006-07-18 11:07:36 · answer #4 · answered by krishna 2 · 0⤊ 0⤋
y=2
x=0
2006-07-18 10:40:47 · answer #5 · answered by bluesax2000 2 · 0⤊ 0⤋
x = -3 + 3/2y
y - 9 + 9/2y = 2
11/2y = 11
y = 2
x = 0
2006-07-18 10:41:54 · answer #6 · answered by Alyssa 5 · 0⤊ 0⤋
x=0
y=2
2006-07-18 10:48:46 · answer #7 · answered by big d 3 · 0⤊ 0⤋