Question

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Answer 1

Ответ:

Пошаговое объяснение:

1)  5.1(12)+128/330 = 5 (112-1)/990+128/330=5 37/330+128/330=

=5 165/330=5 1/2;

2)  2.3(72)-41/110 = 2 (372-3)/990  -41/110=2 41/110-41/110 = 2.

3)  4,23(6)+29/300=4 (236-23)/900+29/300=4 213/900  +29/300 =

=4 71/300+29/300 = 4 100/300 = 4 1/3.

4)  3,16(54) - 18/275 = 3 (1654-16)/9900 - 18/275=3 1638/9900-18/275=

=3 91/550 - 18/275 = 3  (91-36)/550 = 3  55/550=  3 1/10.