Question

Examine the system of equations.

-5x + 5y = 40
4x +
Зу = 24
What is the solution?

Answer 1

y = 26.2857143 or 184/7 or 26 2/7

x = -13.7142857 or -96/7 or -13 5/7

Explanation:

-5x + 5y = 40

-x + y = 40

x = -40 + y

substitute x for -40 + y

4(-40 + y ) + 3y = 24

-160 + 4y + 3y = 24

7y = 184

y = 26.2857143 (?)

x = -40 + 26.2857143

x = -13.7142857