Réponse:
Exercice 2
Explications étape par étape:
J = 7/10 + 4/15
J = 7×3/10×3 + 4×2/15×2
J = 21/30 + 8/30
J = 29/30
K = 1/6 + 10/21
K = 1×7/6×7 + 10×2/21×2
K = 7/42 + 20/42
K = 27/42
L = 5/12 + 3/8
L = 5×2/12×2 + 3×3/8×3
L = 10/24 + 9/24
L = 19/24
M = 2/9 + 1/6
M = 2×2/9×2 + 1×3/6×3
M = 4/18 + 3/18
M = 7/18
N = 7/10 - 4/15
N = 7×3/10×3 - 4×2/15×2
N = 21/30 - 8/30
N = 13/30
P = 1/6 - 10/21
P = 1×7/6×7 - 10×2/21×2
P = 7/47 - 20/42
P = -13/42
R = 5/12 - 3/8
R = 5×2/12×2 - 3×3/8×3
R = 10/24 - 9/24
R = 1/24
S = 2/9 - 1/6
S = 2×2/9×2 - 1×3/6×3
S = 4/18 - 3/18
S = 1/18
J'espère pouvoir vous aider ;)
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Réponse:
Exercice 2
Explications étape par étape:
J = 7/10 + 4/15
J = 7×3/10×3 + 4×2/15×2
J = 21/30 + 8/30
J = 29/30
K = 1/6 + 10/21
K = 1×7/6×7 + 10×2/21×2
K = 7/42 + 20/42
K = 27/42
L = 5/12 + 3/8
L = 5×2/12×2 + 3×3/8×3
L = 10/24 + 9/24
L = 19/24
M = 2/9 + 1/6
M = 2×2/9×2 + 1×3/6×3
M = 4/18 + 3/18
M = 7/18
N = 7/10 - 4/15
N = 7×3/10×3 - 4×2/15×2
N = 21/30 - 8/30
N = 13/30
P = 1/6 - 10/21
P = 1×7/6×7 - 10×2/21×2
P = 7/47 - 20/42
P = -13/42
R = 5/12 - 3/8
R = 5×2/12×2 - 3×3/8×3
R = 10/24 - 9/24
R = 1/24
S = 2/9 - 1/6
S = 2×2/9×2 - 1×3/6×3
S = 4/18 - 3/18
S = 1/18
J'espère pouvoir vous aider ;)