Question

Using the method of substitution, solve the following system of linear equations: 3x + 2y = 12 ; x + 4y = 9

Answer 1

Answer:

Step-by-step explanation:

3x+2y=12-------1

x+4y=9----------2

From equation 2....

x=9-4y----3

Put value of x into equation 1

3(9-4y)+2y=12

27-12y+2y=12

27-10y=12

-(10y)=12-27

-(10y)=-(15)

10y=15

y=15/10

y=3/2------4

Put y value in equation 3

x=9-4*3/2

x=3

Hope it helps u..

Answer 2

I think this answer u will use