What is the solution of the system of equations 5x + 4y = - 2 and x - 4y = - 14?

1 Answer
Apr 15, 2018

x=-8/3
y=17/6

Explanation:

5x+4y=-2
x-4y=-14

By adding the first equation to the second equation we get

5x+4y+x-4y=-2-14
x-4y=-14

6x=-16
x-4y=-14

x=-16/6
x-4y=-14

x=-8/3
-8/3-4y=-14

x=-8/3
4y=-8/3+42/3

x=-8/3
4y=34/3

x=-8/3
y=34/12

x=-8/3
y=17/6