3y+-5x+15
-y=-3x+9
I rearrange them
3y+5x=15
-y+3x=9
i times the bottom one by 3 and got
-3y+9x=27
i add the 2 equnation and got
16x=42
x=2.63
i plug in 2.63 into one the of the equation i reaanged
3y+5(2.63 )=15 and got
3y+13.15=15
minus 13.15 form both sides and got
3y=1.85
divide by three and got
.6166666666666 ( i round up to .617)
is this one right?
2007-04-12 11:22:22 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Here's where you went wrong:
i add the 2 equnation and got
16x=42
(9x + 5x = 14x, not 16x)
Otherwise it looks like you did the process right.
2007-04-12 11:28:34 · answer #1 · answered by Mathematica 7 · 0⤊ 0⤋
It should be 14x=42 in the 9th row.
2007-04-12 18:27:26 · answer #2 · answered by bruinfan 7 · 1⤊ 0⤋
5x plus 3x = 8x not 9x
2007-04-12 18:27:36 · answer #3 · answered by Jets 3 · 0⤊ 1⤋
after adding the two equations you should have gotten
14x=42
try that and see if it works.
2007-04-12 18:31:34 · answer #4 · answered by Sterling 1 · 0⤊ 0⤋