I need a little help with solving the system3a - 2b + 7c =13a + 8b - 6c = -477a - 9b -9c = -3

Solve the system -x2 +4x3 5x1 -4x2 +7x3 -3x1 +27x3 -54

9) -8x - 6y=5 4x + 3y = -4 Solve System of Equations Using Elimination

Solve the system   -a+4b+2c=-8 3a+b-4c=9 b=-1

I do not remember how to do this problem-12=-3v in the simplest form.

Solve and graph the following system of equations 6x - 5 25x + 23 15x-7> 25x + 23

Find A

The developers of a web site are tracking its number of adult users and teenage users. They found that the equation 82x + y = 695 models the number of teenage users over time, and the equation 127x – 2y = -128 models the number of adult users over time. In both equations, x is the number of years since 2000, and y is the number of users in thousands. During what year was the number of teenage users and adult users the same?

x+y+z = -3 2x - 2y-z = -7 -3x + y + 5z = 5

x=2+2y 3x-5=6y  solve system of equations