Question

2x - y - 4 = 0

3x + y - 9 = 0



What is the solution set of the given system?

Answer 1

`((13)/(5);(6)/(5)).`

Explanation:

`1)\left \{ {{5x=13} \atop {y=2x-4}} \right. \ 2)\left \{ {{x=(13)/(5) } \atop {y=(6)/(5) }} \right.`

short explanation: 1) to add the 1st equation to the 2d; 2) to calculate the value of 'x', then to substitute x=13/5 into the 2d equation and calculate the value of 'y'.