2x + 1 + 7. 2x + 3 = 232
2x . 2 + 7. 2x . 23 = 232
2x . 2 + 7 . 8 . 2x = 232
2x . 2 + 56 . 2x = 232
2x . ( 2 + 56 ) = 232
2x . 58 = 232
2x = 232 : 58
2x = 4
2x = 22
=> x = 2
2x x 2 + 7 x 2x x 23=232
2x(2+7 x 23)=232
2x x 58 =232
2x=232:58=4=22
=>x=2