Salut,
[ 13, 4 + 0, 5 × (147, 8 - 1, 25 × 100)] =
[ 13, 4 + 0, 5 × (147, 8 - 125)] =
13, 4 + 0, 5 × 22, 8 =
13, 4 + 11, 4 =
24, 8✔