x + 3 = 18

x = ?

(a)  

2x + 4 = 6

x = ?

(a)  

x + 14 = 20

x = ?

(a)  

2x + 3 = 21

x = ?

(a)  

48 - 3x = 5x

x = ?

(a)  

3x + 1 = 6x -8

x = ?

(a)  

10x - 15 = 4x + 27

x = ?

(a)