Question

Solve the system of equations:

-5x-3y-9=0
4x - 18y -54=0

What is the value of x and y?

Please include an explanation because I’m having a hard time understanding it

Answer 1

Hi,

x=0,y=-3

Explanation:

`\Left \{ \begin{array}{ccc}-5x-3y-9&=&0\\4x-18y-54&=&0\\\end {array} \right.\\\\\\\Left \{ \begin{array}{ccc}5x+3y&=&-9\\4x-18y&=&54\\\end {array} \right.\\\\\\\Left \{ \begin{array}{ccc}30x+18y&=&-54\\4x-18y&=&54\\\end {array} \right.\\\\\\\Left \{ \begin{array}{ccc}34x&=&0\\4x-18y&=&54\\\end {array} \right.\\\\\\\Left \{ \begin{array}{ccc}x&=&0\\y&=&-3\\\end {array} \right.\\`