a) (3-2) x (2-1) =
1 x 1 = 1
b)
5 x (3-2) + 3(do potęgi 2) =
5 x 1 + 3(do potęgi 2) =
5 x 1 + 9 =
5 + 9 = 14
c) 14 : 2 + 5 x 2 =
7 + 10 =
17
d) 20 x 2 - 3 x (4+1) =
40 - 3 x 5 =
40 - 15 =
25
