How can I solve:
x-3y=6
2x-6y=5
2007-03-28 04:07:22 · 6 answers · asked by bratt1 1 in Science & Mathematics ➔ Mathematics
x - 3y = 6- - - - - -Equation 1
2x - 6y = 5- - - - -Equation 2
- - - - - - - - -
substitute method equation 1
x - 3y = 6
x - 3y + 3y = 3y + 6
x = 3y + 6
Substitute x value into equation 2
- - - - - - - - - - - - - - - - - - - - - - - -
2x - 6y = 5
2(3y + 6) - 6y = 5
6x + 12 - 6y = 5
The coefficients and variables cancell. No solution
- - - - - - - - - -s-
2007-03-28 05:09:51 · answer #1 · answered by SAMUEL D 7 · 0⤊ 0⤋
x = 6 + 3y rearrange first equation
substitute into second equation
2(6 + 3y) -6y = 5
12 +6y -6y =5
12=5 thus shows there is no solution for these two equations
2007-03-28 11:18:25 · answer #2 · answered by bignose68 4 · 0⤊ 0⤋
-x +3y = -6
-2x +6y = -12
2x -6y = 5
0 = -7
The values contradict each other, so it is unsolvable.
2007-03-28 11:16:09 · answer #3 · answered by math freak 3 · 0⤊ 0⤋
2x - 6y = 12
2x - 6y = 5
***** equations are not consistent, so you can't solve
2007-03-28 11:16:16 · answer #4 · answered by hustolemyname 6 · 0⤊ 0⤋
sorry i am very weak in mathematics.
2007-03-28 11:33:19 · answer #5 · answered by Anonymous · 0⤊ 0⤋
u solve it first then i'll tell u if it is correct .. :)
2007-03-28 11:15:04 · answer #6 · answered by sadafeh 2 · 0⤊ 0⤋