Respuesta :

Answer:

1. 7x + 5 = 19

7x = 14

x = 2

2. 4x - 12 = 2x - 4

2x - 12 = -4

2x = 8

x = 4

Answer:

x = 2 and x = 4

Step-by-step explanation:

(1)

3x + 5 = 19 - 4x ( add 4x to both sides )

7x + 5 = 19 ( subtract 5 from both sides )

7x = 14 ( divide both sides by 7 )

x = 2

(2)

4(x - 3) = 2(x - 2) ← distribute parenthesis on both sides

4x - 12 = 2x - 4 ( subtract 2x from both sides )

2x - 12 = - 4 ( add 12 to both sides )

2x = 8 ( divide both sides by 2 )

x = 4