How do you solve the following system: #-x+y=5, 6x+3y=-12#?
1 Answer
Jan 9, 2016
Solving using substitution:
Explanation:
-x + y = 5
y = 5 + x
6x + 3(5 + x) = -12
6x + 15 + 3x = -12
9x = -12 - 15
9x = -27
x = -3
Substitution -3 for x:
-(-3) + y = 5
y = 5 - 3
y = 2
The solution set is (-3,2)
Hopefully this helps. Below I have included three systems of equations including one linear-quadratic. Feel free to ask how to solve the linear quadratic system should you not know how.
a) 6x + 5y = -2
x - 8y = 13
b) 4x - 5y = 15
3x - 6y = -7
c)
-2x - y = 4
Enjoy!
