Question

Cross multiplication method.
Зx+y= 13 аnd x- 3y+9=0​

Answer 1

Answer:

....................

Answer 2

Answer:

pls mark brainliest

Step-by-step explanation:

-3x+y=13 (1)

x-3y=-9 (2)

x y 1

1 -13 -3 1

-3 9 1 -3

x/1×9-(-3)(-13)=y/-13×1-9×-3=1/-3×(-3)-1

x/9-39=y/-13+27=1/9-1

x/-30=y/14=1/8

x/-30=1/8

x=-30/8

y/14=1/8

y=14/8