Question

5x-2y=-10 3x+6y=66 using elimination method

Answer 1

$\huge{ANSWER}$

5x -2y = -10 .....1

3x + 6y =66......2

on multiplying eq. 1 by 3

5x -2y = -10 .....1 ×3

15x -6y =-30

now subtract both equations ,

15x -6y =-30

3x + 6y =66

-___-_____-_

12x =-96

x= -8.

putting value of x in eq 1

5×8 -2y =-10

40 -2y =-10

40-10=2y

50=2y

25=y.