A=3/4 + 13/4 B=5 + 9/4 C=1/4-3/11 D=-4/5+6×3/7 E=-3/4×3/-9×8/-6 F=-5/4×15-7×3/8×4/3 G=3/4÷13/5 K=5/4+1/4×7/5
Mathématiques
evahumeau86
Question
A=3/4 + 13/4
B=5 + 9/4
C=1/4-3/11
D=-4/5+6×3/7
E=-3/4×3/-9×8/-6
F=-5/4×15-7×3/8×4/3
G=3/4÷13/5
K=5/4+1/4×7/5
B=5 + 9/4
C=1/4-3/11
D=-4/5+6×3/7
E=-3/4×3/-9×8/-6
F=-5/4×15-7×3/8×4/3
G=3/4÷13/5
K=5/4+1/4×7/5
1 Réponse
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1. Réponse maudmarine
A=3/4 + 13/4A = 16/4
A = 4 x 4 / 4 x 1
A = 4
B = 5 + 9/4
B = 5 x 4 / 1 x 4 + 9/4
B = 20/4 + 9/4
B = 29/4
C=1/4-3/11
C = 1 x 11 / 4 x 11 - 3 x 4 / 11 x 4
C = 11/44 - 12/44
C = - 1/44
D =-4/5 + 6 × 3/7
D = - 4/5 + 18/7
D = - 4 x 7 / 5 x 7 + 18 x 5 / 7 x 5
D = - 28/35 + 90/35
D = 62/35
E = - 3/4 × 3/- 9 × 8/-6
E = 9/36 x - 8/6
E = - 72/216
E = 72 x - 1 / 72 x 3
E = - 1/3
F = - 5/4 × 15 - 7 × 3/8 × 4/3
F = - 75/15 - 21/8 x 4/3
F = - 75/15 - 84/24
F = - 75 x 24 / 15 x 24 - 84 x 15 / 24 x 15
F = - 1800/360 - 1260/360
F = - 3060/360
F = 180 x - 17 / 180 x 2
F = - 17/2
G = 3/4 ÷ 13/5
G = 3/4 x 5/13
G = 15/52
K = 5/4 + 1/4 × 7/5
K = 5/4 + 7/20
K = 5 x 5 / 4 x 5 + 7/20
K = 25/20 + 7/20
K = 32/20
K = 4 x 8 / 4 x 5
K = 8/5