7x + 8y = 4

3x + 2y = 6

x=4

y=-3

Step-by-step explanation:

use substitution method:

1)

7x + 8y = 4 ... (1)

3x + 2y = 6 ... (2)

2) Create the third equation by using

equation (2)

3x + 2y = 6

3x = 6-2y

x = 6-2y/3 ... (3)

3) Substitute (3) into (1)

7 (6-2y) / 3 + 8y = 4

4) Solve the equation

42 - 14y / 3 + 8y = 4

42 - 14y+24y = 12

10y = 12-42

y = - 3

5) Find value of x

x = 6-2y/3

= 6 - 2 (-3) / 3

= 12/3

= 4