Question

tell plsssssssss std 9​

Answer 1

x = 4 , y = -3

Step-by-step explanation:

5x + 7y = -1

2x - 3y = 17

equalise coefficient of x, then

10x + 14y = -2 ; equation 1 × 2

10x - 15y = 85 ; equation 2 × 5

then subtract the 2 equation

the result will be y = -3

then substitute the value in equation 1, we get

5x + 7×(-3) = -1

on solving this, we get

x = 4