2) Solve the equations, explain the steps for part a.

a) - 3 (2x + 4) = 7x + 19

b) 2x+4 = 7 - 5x

Answer: a) x = 2,38 b) x = 0,42

Explanation:

a) - 3 (2x + 4) = 7x + 19

-6x - 12 = 7x + 19

-6x - 7x = 19 + 12

-13x = 31

x = 31

13

x = 2,38

b) 2x+4 = 7 - 5x

2x + 5x = 7 - 4

7x = 3

x = 3

7

x = 0,42