Question

solve by substitution method 2x+3y=1 , 2x-4y=-24

Answer 1

In the attachment I have answered this problem.

The solution is simple and easy to understand.

See the attachment for detailed solution.

Answer 2

2x + 3y = 11 ------(1)

2x - 4y = -24--------(2)

From equation (2),we will get

2x-4y=-24

2(x-2y)=2(-12)

x-2y=-12

x=-12+2y

Put x=-12+2y in equation (1)

2x + 3y = 11

2(-12+2y)+3y=11

-24+4y+3y=11

7y=11+24

7y=35

y=35/7

y=5

x=-12+2y

x=-12+2(5)

x=-12+10

x=-2

y=mx+3

5=m(-2)+3

5=-2m+3

-2m=5-3

-2m=2

m=2/-2

m=-1