Question

6 X + 3 Y is equal to 7 x y, 3 X + 9 Y is equal to 11 x y z by elimination method​

Answer 1

6x+3y=7xy...........(1)

3x+9y=11xy..........(2)

eq1×3, 18x+9y= 21xy

eq2×2, 3x+9y=11xy

(-). (-). (-)

15x=11xy

dividing by x,

15=11y

y=15/11

calculate x