Question

Simultaneous equation

3y-x=5
5y-2x=1

Answer 1

-x+3y=5

-2x+5y=1

per combinaison

-2(-x+3y)=5) ---< 2x-6y=-10

2x-6y=-10

-2x+5y=1

-y=-9

y=9

we calculate x :

-x+3y=5

-x+27=5

-x=5-27

x = 22

Explanation: