Найди значение суммы по образцу.
Образец:
52 + 39 = (50 + 2) + (30 + 9) = (50 + 30) + (2 + 9) = 80 + 11 = 91
48 + 34 = (40 + 8) + (30 + 4) = (
+
) + (
+
) =
=
+
=

55 + 28 = (
+
) + (
+
) =
= (
+
) + (
+
) =
+
=