Explications étape par étape:
A = (3 ×7)/(5 × 2 × 7) = 3/10
B = (2 × 3 × 5)/(3 × 4 × 5) = 2/4 =(1×2)/(2×2) = 1/2
C = (3 × 5 × 9)/(2 × 3 × 5 × 5) = 9/ 10
D = ( 3 × 4 × 7)/(5 × 2 × 4) = 21/10
Tu as compris?
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Explications étape par étape:
A = (3 ×7)/(5 × 2 × 7) = 3/10
B = (2 × 3 × 5)/(3 × 4 × 5) = 2/4 =(1×2)/(2×2) = 1/2
C = (3 × 5 × 9)/(2 × 3 × 5 × 5) = 9/ 10
D = ( 3 × 4 × 7)/(5 × 2 × 4) = 21/10
Tu as compris?