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Verified answer

Bonsoir,

Exercice 2 :
a)
x = 11 * 13 / 8
x = 143/8

b)
y = 6,3 * 7 / 5
y = 44,1/5

c)
z = 4 * 8 / 7
z = 32/7

EXERCICE 4 :
1)
1 - (1/7 + 1/3)
= 1/1 - (3/21 + 7/21)
= 21/21 -10/21
= 11/21

3/4 * 11/21 = 33/84 = 11/28
Le potager représente 11/28 du jardin.

1 - 3/4 = 1/1 - 3/4 = 4/4 - 3/4 = 1/4
1/4 * 11/21 = 11/84
Les fleurs representent 11/84 du jardin.

2)
2/5 * 11/28 = 22/140 = 11/70
Les tomates representent 11/70 du jardin.

22 * 70 / 11 = 1540/11 ≈ 140 m²
La superficie totale du jardin est de 140 m².

Bonne soiree