Para praticar

Resolva as seguintes equações:

 

1) 2 x + 6 = x + 18

2) 5 x – 3 = 2 x + 9

3) 3 (2x-3) + 2 (x + 1) = 3x + 18

4) 2x + 3 (x – 5) = 4x + 9

5) 2 (x + 1) – 3 (2x – 5) = 6x – 3

6) 3x – 5 = x – 2

7) 3x – 5 = 13

8) 3x + 5 = 2

9) x – (2x – 1) = 23

10) 2x – (x – 1) = 5 – (x – 3)