Question

Solve this equation in a elimination method
2x-3y=7
5x+y=9​

Answer 1

Answer:

Step-by-step explanation:

2x-3y=7                       (1)

5x+y=9                        (2)

multiply eq. 1 by 5 and eq. 2 by 2

10x-15y=35                   (3)

10x+2y=18                    (4)

subtract eq.4 from eq.3

10x-15y-10x-2y=35-18

-17y=13

y=-13/17

put the value of y in eq 1

5x -13/17=9

5x=9+13/17

5x=153+13/17

x=166/85

hope it helps..

Answer 2

Answer:

x = 2 y = -1

Step-by-step explanation:

Step-by-step explanation:2x-3y=7 (i)

Step-by-step explanation:2x-3y=7 (i)5x+y=9 (ii)

Step-by-step explanation:2x-3y=7 (i)5x+y=9 (ii)Multiply y by -3 in equation (ii)

Step-by-step explanation:2x-3y=7 (i)5x+y=9 (ii)Multiply y by -3 in equation (ii)-15x -3y= -27 (iii)

Step-by-step explanation:2x-3y=7 (i)5x+y=9 (ii)Multiply y by -3 in equation (ii)-15x -3y= -27 (iii)subtract (iii) from (i)

Step-by-step explanation:2x-3y=7 (i)5x+y=9 (ii)Multiply y by -3 in equation (ii)-15x -3y= -27 (iii)subtract (iii) from (i)2x-3y -(-15x -3y) = 7 -(-27)

Step-by-step explanation:2x-3y=7 (i)5x+y=9 (ii)Multiply y by -3 in equation (ii)-15x -3y= -27 (iii)subtract (iii) from (i)2x-3y -(-15x -3y) = 7 -(-27)2x-3y + 3y + 15x = 34

Step-by-step explanation:2x-3y=7 (i)5x+y=9 (ii)Multiply y by -3 in equation (ii)-15x -3y= -27 (iii)subtract (iii) from (i)2x-3y -(-15x -3y) = 7 -(-27)2x-3y + 3y + 15x = 342x + 15x = 34

Step-by-step explanation:2x-3y=7 (i)5x+y=9 (ii)Multiply y by -3 in equation (ii)-15x -3y= -27 (iii)subtract (iii) from (i)2x-3y -(-15x -3y) = 7 -(-27)2x-3y + 3y + 15x = 342x + 15x = 3417x = 34

Step-by-step explanation:2x-3y=7 (i)5x+y=9 (ii)Multiply y by -3 in equation (ii)-15x -3y= -27 (iii)subtract (iii) from (i)2x-3y -(-15x -3y) = 7 -(-27)2x-3y + 3y + 15x = 342x + 15x = 3417x = 34x=2

Step-by-step explanation:2x-3y=7 (i)5x+y=9 (ii)Multiply y by -3 in equation (ii)-15x -3y= -27 (iii)subtract (iii) from (i)2x-3y -(-15x -3y) = 7 -(-27)2x-3y + 3y + 15x = 342x + 15x = 3417x = 34x=2therefore by putting value of X in (i) , we can get the value of y.

Step-by-step explanation:2x-3y=7 (i)5x+y=9 (ii)Multiply y by -3 in equation (ii)-15x -3y= -27 (iii)subtract (iii) from (i)2x-3y -(-15x -3y) = 7 -(-27)2x-3y + 3y + 15x = 342x + 15x = 3417x = 34x=2therefore by putting value of X in (i) , we can get the value of y.y = -1