Resuelve las siguientes expresiones: 40 – 10 x 4 =
(40 – 10 ) x 4 =
44 x (4 + 7 ) =
30 x ( 15 – 9 ) =

10 x 100 – 1 =
10 x (100 – 1) =

2 + 3 x 5 – 8 =
(2 + 3 ) x 5 – 8 =​