Réponse:
A = 17
B = 34
C = 31
Explications étape par étape:
A = x(16 - 2x) + 3
= 7(16 - 2×7) + 3
= 7(16 - 14) + 3
= 7 × 2 + 3
= 14 + 3
= 17
B = (2y + 1)(26 - 3y)
= (2×8 + 1)(26 - 3×8)
= (16 + 1)(26 - 24)
= 17 × 2
= 34
C = 3z - (5 - 3z)
= 3×6 - (5 - 3×6)
= 18 - (5 - 18)
= 18 - 5 + 18
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A= 7( 16-14)+3
A=7x2+3
A= 14+3
A= 17
Voilà j’espère ne pas mettre trompée !
Réponse:
A = 17
B = 34
C = 31
Explications étape par étape:
A = x(16 - 2x) + 3
= 7(16 - 2×7) + 3
= 7(16 - 14) + 3
= 7 × 2 + 3
= 14 + 3
= 17
B = (2y + 1)(26 - 3y)
= (2×8 + 1)(26 - 3×8)
= (16 + 1)(26 - 24)
= 17 × 2
= 34
C = 3z - (5 - 3z)
= 3×6 - (5 - 3×6)
= 18 - (5 - 18)
= 18 - 5 + 18
= 34