Question

{7+X}x4+x=108

Answer 1

( 7 + x ) * 4 + x = 108

=> 28 + 4x + x = 108

=> 28 + 5x = 108

=> 5x = 80

=> x = 16 (tm)

Answer 2

(7 + x ) * 4 + x = 108

7 * 4 + x * 4 + x = 108

28 + x * 5 = 108

x * 5  = 108 -  28

x * 5 = 80

x = 80 : 5

x = 16

Answer 3

( 7 + x ) x 4 + x = 108

7 x 4 + x x 4 + x = 108

28 + x x 5 = 108

x x 5 = 108 - 28

x x 5 = 80

x = 80 : 5

x = 16