Verified answer

Re bonsoir

2 ( 3 x + x + 2 ) = 45

6 x + 2 x + 4 = 45

8 x + 4 = 45

8 x = 45  - 4

8 x = 41

x = 5.125

longueur  = 5.125 * 3 = 15.375

largeur  = 5.125 + 2 = 7 .125