Bonsoir,
A= 11/9 – 5/4 + 5
A = (11 x 4) / (9 x 4) - (5 x 9) / (4 x 9) + (5 x 36) / (1 x 36)
A = 44/36 - 45/36 + 180/36
A = 179/36
