Does anyone know how to do the substitution or elimination method for this problem?

0 ⤊

3X-Y=10

X-5y=-6

2007-01-11 14:19:29 · 2 answers · asked by theoneandonly4251 2 in Education & Reference ➔ Homework Help

3x-y=10
y=3x-10

x-5(3x-10)=-6
x-15x+50=-6
-14x+50=-6
-14x=-56
x=4

y=3x-10
y=3(4)-10
y=12-10
y=2

2007-01-11 14:31:26 · answer #1 · answered by ChelsDB 2 · 0⤊ 0⤋

From the second one, X=5Y-6

Putting this value in the first one gets you:

15Y-18-Y=10
or, 14Y = 28
or, Y = 2

So, X = 10-6 = 4

2007-01-11 22:23:59 · answer #2 · answered by RS 4 · 0⤊ 0⤋