bonjour
noter x la case jaune
verte = x+ 1
bleu = 5 ( x + 1 ) = 5 x + 5
rouge = 5 x + 5 - 3 = 5 x + 2
jaune = 2 ( 5 x+ 2 ) = 10 x + 4
donc x = 10 x + 4
on résoud
10x + 4 = x
9 x = - 4
x = - 4/9
jaune = - 4/9 = - 2/3
vert = - 4 /9 + 1 = - 4/9 + 9/9 = 5 /9
bleu = 5/9 * 5 = 25/9
rouge = 25/9 - 3 = 25/9 - 27/9 = - 2 /9 = - 1/3
jaune = - 1/3 * 2 = - 2 /3
