Question

Help me please with math

Answer 1

Пошаговое объяснение:

а)

7 11/50+0,78-4 7/8=

1) 7 11/50+78/100=7 11/50+39/50=

=7 50/50=8

2) 8-4 7/8=7 8/8-4 7/8=(7-4)+(8/8-7/8)=

=3+1/8=3 1/8

б)

5/6+1 3/4+1,25=

1) 5/6+1 3/4=5/6+7/4=(10+21)/12=31/12=2 7/12

2) 2 7/12+1,25=2 7/12+1 1/4=2 7/12+1 3/12=

=3 10/12=3 5/6