Question

2x+7y=10
3x+y=6 solve it by elimination method

Answer 1

2x+7y=10. *3

3x+y=6. *2

6x+21y=30

6x+2y. =12

- - - sign change

19y= 18

y= 18/19

similarly

3x + 18/19=6

3x= 6-18/19

3x=96/19

x=32/19

Answer 2

Answer:

x=32/19

y=18/19

Step-by-step explanation:

(1)*1, 2x+7y=10

(2)*7,21x+7y=42

2x+7y=10

-21x-7y=-42

-19x     =-32

        x=32/19

sub...x=32/19 in (1)

2(32/19)+7y=10

64/19+7y=10

7y=10-64/19

7y=190-64/19

7y=126/19

7y=126/19*7

y=126/133              (/7)

y=18/19

solution set =(32/19, 18/19)

THANK YOU