Question

find the number of solutions for x+3y-5=0 and 3x+9y=15

Answer 1

Step-by-step explanation:

Given,

x+3y-5=0 (let this be equation (1))

3x+9y=15

3x+9y-15=0 (let this be equation (2))

equation (1) ×3

3x+9y-15=0 (let this be equation (3))

equation (2) - equation (3)

x=0,y=0

there is only one solution