Question

Solve this equation by elimination method

Answer 1

Answer:

Step-by-step explanation:

divide and multiply both the side by 3 in 1st eqution and in second divide and multiply by 5,

so we get,

3x-2y=8--------1st eqution

2x-5y=7-------2nd eqution

so multiply both the side by eqution 1 and 2 by 2 or 5 respective

so we get ,

15x-10y=40 and 4x-10y=14 respectively,

so to eliminate the y we subtract eqution 1 from 2

[15x-10y=40]-[4x-10y=14]

so solving this we get,

x=26/11

so now put this x value on eqution 1st

so we get value of y,

3(26/11)-2y=8

78/11-2y=8

(78/11)-8=2y

78-88/11=2y

-10/11=2y

-10/22=y

y=-10/22

hence value of (x,y)=(26/11,-10/22)