Question

determine whe
2x-3y=18 6x-9y=15​

Answer 1

Answer:

x=5/2 y=-1

Step-by-step explanation:

by elimination method

=3(2x-3y=8)

=6x-9y=18.......1 equation

6x-9y=15(given).......2 equations

now by subtracting both the equation we get

0x+0y=33

taking zero as common we get

0(x+y)=33

x+y=0

x=-y.....3equation

now putting the value of x is 2 equation

we get

-6y-9y=15.....3 equation

-15y=15

y=-1

now putting the value of y again in 2x-3y=18 we get

2x+3=8

2x=5

x=5/2