x-4 = 3 -----    --- 6        2

(x-4)/6 = 3/2
2(x-4) = 6*3
2x-8 = 18
2x = 18+8
2x = 26
x = 26/2
x = 13

Bonjour, 

[tex](x-4)/6=3/2 \\ 2(x-4)=3*6 \\ 2x-8=18 \\ 2x=8+18 \\ 2x=26 \\ x=26/2 \\ x=13[/tex]

S= {13}