Question

Solve following system of equations 3x-y=0
5x+2y=22

Answer 1

Answer:

3x+2y+2=0 as equation1

5x+3y-22=0 as equation 2

multiply 1 equation by 3

9x+6y+6=0

multiply 2 equation by 2

10x+6y-44=0

subtract 1 equation from 2 one

10x+6y-44-9x-6y-6=0

x-50=0

x=50

put value of x in 1 equation

150+2y+2=0

152+2y=0

2y=-152

y=-76

Answer 2

Answer:

xy=3 xy=29

Step-by-step explanation:

3x-y=0 5x+2y=22

xy=0+3 5x+2y=22

xy=3 7xy=22

xy=7+22

xy=29