Explanation

(1) Solve for x in the first equation.

7x + 4 = -19 + 5x

(2)Subtract 5x from both sides

7x - 5x + 4 = -19 + 5x - 5x

2x + 4 = -19

(3) Subtract 4 from both sides

2x + 4 - 4 = -19 - 4

2x = -23

(4) Divide both sides by 2.

2x/2 = -23/2

x = -23/2

(5) Replace x with -23/2 in the second equation.

2x - 14

2(-23/2) - 14

-23 - 14

-37