Explications étape par étape :
a = 4 b = 7
F = a + 2b
F = 4 + (2*7)
⇔ F = 4 + 14
⇔ F = 18
G = 3(b - a )
G = 3(7 - 4 )
⇔ G = 3 * 3
⇔ G = 9
H = ( 5a - 3 ) ( 7 + 2b )
H = [ ( 5 * 4) - 3 ] [ ( 7 + 2) * 7 ]
⇔ H = ( 20 - 3 ) ( 7 + 14 )
⇔ H = 17 * 21
⇔ H = 357
I = 3ab - 6b + 2
I = (3 * 4 * 7) - (6 * 7) + 2
⇔ I = 84 - 42 + 2
⇔ I = 44
J = a² + b
J = 4² + 7
⇔ J = 16 + 7
⇔ J = 23
