Sagot :
Bonjour,
A = 8/12 + 5/3
A = (4 × 2)/(4 × 3) + 5/3
A = 2/3 + 5/3
A = 7/3
B = 40/72 - 1/9
B = (8 × 5)/(8 × 9) - 1/9
B = 5/9 - 1/9
B = 4/9
C = 15/35 + 2/7
C = (5 × 3)/(5 × 7) + 2/7
C = 3/7 + 2/7
C = 5/7
Bonjour,
A = 8/12 + 5/3
A = (4 × 2)/(4 × 3) + 5/3
A = 2/3 + 5/3
A = 7/3
B = 40/72 - 1/9
B = (8 × 5)/(8 × 9) - 1/9
B = 5/9 - 1/9
B = 4/9
C = 15/35 + 2/7
C = (5 × 3)/(5 × 7) + 2/7
C = 3/7 + 2/7
C = 5/7