Question

SOLVE THE SYSTEM OF EQUATIONS BY ELIMINATION METHOD.

1. 5x+y=9, 10x-7y=-18

Answer 1

STEP BY STEP EXPLANATION GIVEN IN THE ABOVE PIC

Answer 2

Answer:

x=1, y=4

Step-by-step explanation:

Eliminate equation (1) and (2)

multiply equation (1) by 2

= 2(5x+y= 9) ....(1)

= 10x-7y= -18 ....(2)

subtract equation (2) by (1)

= 10x+2y=18

= 10x-7y= -18

= -    +       +

= 9y= 36

= y=4

put value of y=4 in equation (1)

= 5x+4= 9

= 5x= 5

= x= 1