Question

elimination method of class 10 solve this question 8x-9y=18 and 7x-12y=24​

Answer 1

Answer:

tje required answer is x=0 and y=-2

Step-by-step explanation:

Given 8x-9y=18

and 7x-12y=24

multiply the first equation with by 4 we get 32x-36y=72

secondly multiply the second equation by 3 we get 21x-36y=72

Now by elimination we get

$32x - 36y = 72 \\ 21x - 36y = 72 \\ - \: \: \: \: \: \: + \: \: \: \: \: \: - \\ = 11x = 0 \\ x = 0$

putting the value of x in the first eq we get

$8x - 9y = 18 \\ 8 \times 0 - 9y = 18 \\ y = - 2$

by solving the above two equation by elimination method we get x=0 and y=-2