Verified answer

Ответ:

Объяснение:

1) 7,8·4/13 -61,5÷13 2/3 +198,8=39/5 ·4/13 -123/2 ·3/41 +198,8=2 2/5-4 1/2+198,8=2,4-4,5+198,8=196,7

2) 19,25·5/11 +5,76·5/12 -13,009=77/4 ·5/11 +144/25 ·5/12 -13,009=8 3/4+2 2/5-13,009=8,75+2,4-13,009=-1,859

3) 4,625·2 2/15 ÷2,96-2 4/7=37/8 ·32/15 ·25/74 -2 4/7=3 1/3 -2 4/7=2 28/21-2 12/21=16/21

4) 30,25÷4 5/7÷1,05-2 1/6=121/4 ·7/33 ·20/21 -2 1/6=6 1/9-2 1/6=5 20/18-2 3/18=3 17/18