Question

2x+3y=9 and 3x+4y=5 by substitution method​

Answer 1

Answer:

Step-by-step explanation:

Now,2x=9-3y

x=9-3y/2

Put this value in equation (ii):

3×9-3y/2+4y=5

Answer 2

Step-by-step explanation:

2x+3y=9 ------ 1

3x+4y=5 ------ 2

2 -- 3x+4y=5

x=5-4y / 3 ------- 3

sub in 1

1 ------- 2(5-4y / 3 ) +3y =9

10/3 - 8y/3 + 3y =9

10 - 8y +9y =27

y + 10= 27

y = 17 sub in 3

x = -21