Bonsoir,j'ai un dm de maths à rendre demain et j'bloque sur une exo,merci d'avance pour votre aide.

Bonsoir,

On a : a = 3, b = -4, c = -5 et d = 7

I = 2a – 3b

I = 2×3 – 3×(-4)

I = 6 – (-12)

I = 6 + 12

I = 18

J = ac – bd

J = 3×(-5) – (-4)×7

J = -15 – (-28)

J = -15 + 28

J = 13

K = 5(b – a) + c

K = 5(-4 – 3) + (-5)

K = -20 – 15 – 5

K = 0

Réponse :

BONSOIR

Explications étape par étape

a= 3, b = -4, c = -5 et d = 7

I = 2a – 3b

I = 2×3 – 3×(-4)

I = 6 – (-12)

I = 6 + 12

I = 18

J = ac – bd

J = 3×(-5) – (-4)×7

J = -15 – (-28)

J = -15 + 28

J = 13

K = 5(b – a) + c

K = 5(-4 – 3) + (-5)

K = -20 – 15 – 5

K = -40