treasure8
treasure8
04-12-2017
Mathematics
contestada
4x-5y=-2 and 3y-x=-3
Respuesta :
hunterkoenek
hunterkoenek
04-12-2017
4x-5y=-2
3y-x=-3
-------
4x-5y=-2
x = 3y+3
Substitute for x in eqn 1
4(3y+3)-5y = -2
Answer Link
dannielle
dannielle
04-12-2017
4x-5y=-2
-x+3y=-3 |*4
4x - 5y= - 2
-4x +12y= -12
--------------------
/ 7y=-14
y= -14:7
y= -2
3y-x= -3
3*(-2)-x=-3
-6 - x= -3
x=-6+3
x= -3
The solution is (-3,-2)
Answer Link
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