How do you solve the system of equations 4x + 3y = 3 and x - y = - 8?

1 Answer
May 2, 2017

x=-3 and y=5

Explanation:

4x+3y=3
x-y=-8
Multiply the second line by 3 to get rid of y.
4x+3y = 3
3x-3y=-24
Add the two equations to get rid of y.
7x=-21
Now solve for x.
(7x)/7=(-21)/7
x=-3
Now sub x into one of the equations and solve for y.
4*-3+3y=3
3y=15
(3y)/3=15/3
y=5
(-3,5)