Question

18.9 - 6.8 - 5.2 + 4.1=

Answer 1

$18.9 - 6.8 - 5.2 + 4.1 \\ 1)18.9 + 4.1 = 23 \\ 2) - 6.8 - 5.2 = 12 \\ 3)23 - 12 = 11.$