2x - 9y = 1
5x + 6y = 12
2006-12-04 15:35:08 · 4 answers · asked by supersabin03 1 in Science & Mathematics ➔ Mathematics
2x - 9y = 1
5x + 6y = 12
Multiply 2 to the first equation and 3 to the second.
4x - 18y = 2
15x + 18y = 36
Add the 2
19x = 38
Divide
x = 2
Substitute this to ANY of the equations, and you will solve for y
y = 1/3
Therefore, the solution to the system is x = 2, y = 1/3, or, by using the point-form, (2,1/3)
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2006-12-04 22:32:38 · answer #1 · answered by kevin! 5 · 0⤊ 0⤋
2x - 9y = 1 => 2x = 1 + 9y => x = (1+9y)/2
5x + 6y = 12 => 5((1+9y)/2) +6y = 12 =>
5/2 + 45y/2 +6y = 12 => 57y/2 + 5/2 = 12 =>
57y/2 = 19/2 y = (19*2)/(2*57) ==> y = 1/3
x = (1 + 9y)/2 => x = 1/2 + 3/2 => x = 2
x = 2; y = 1/3
2006-12-04 23:40:08 · answer #2 · answered by David W 3 · 0⤊ 0⤋
x=2
y=1/3
2006-12-04 23:45:09 · answer #3 · answered by smartjock256 2 · 0⤊ 0⤋
x=2, y=1/3
XR
2006-12-04 23:39:18 · answer #4 · answered by XReader 5 · 0⤊ 0⤋