Ответ:
= (2x5)(2x5)(2x5)(2x5)(2x5)(2x5):4x30 =
= (4x10)(2x5)(2x5)(2x5)(2x5):4x30 =
= (8x15)(2x5)(2x5)(2x5):4x30 =
= (16x20)(2x5)(2x5):4x30 =
= (32x25)(2x5):4x30 =
= (64x30):4x30 =
= 64x30:4x30 =
=
Пошаговое объяснение:
-45+(-25)-10
15+7,5-36,6
-3,5-(-2,8)
-3,28+1,75
-4,8+(-0,48)
3,17-(-0,67)
3,27+(-2,86)+5,21
(3,2+(-1,7))+1,7
3к - 29 = 52,
3к = 52 + 29,
3к = 81,
к = 81 : 3,
к = 27,
Проверка :
3*27 - 29 = 52,
81 - 29 = 52,
52 = 52