Răspuns :
25 + 54 : 6 : 3 x 10 - 49 : 7 x 4 =
25 + 3 x 10 - 49 : 7 x 4 =
25 + 30 - 49 : 7 x 4 =
25 + 30 - 7 x 4 =
25 + 30 - 28 =
55 - 28 =
27
25 + 3 x 10 - 49 : 7 x 4 =
25 + 30 - 49 : 7 x 4 =
25 + 30 - 7 x 4 =
25 + 30 - 28 =
55 - 28 =
27