Выполните умножение 1 5/7*6 1/8 6/17*51 3/4*1 1/5+1 1/15*2 1/2-1 3/8-1

1). 1 5/7 * 6 1/8 = 10,46.

1 5/7 = 1,71.

5 : 7 = 0,71;

0,71 + 1 = 1,71.

6 1/8 = 6,12.

1 : 8 = 0,12;

0,12 + 6 = 6,12.

1,71 * 6,12 = 10,46.

2). 6/17 * 51 3/4 * 1 1/5 + 1 1/15 * 2 1/2 - 1 3/8 - 1 1/15 = 

6/17 = 0,35.

6 : 17 = 0,35.

51 3/4 = 51,75.

3 : 4 = 0,75.

51 + 0,75 = 51,75.

1 1/5 = 1,2.

1 : 5 = 0,2;

0,2 + 1 = 1,2,

1 1/15 = 1,06.

1 : 15 = 0,06;

0,06 + 1 = 1,06.

2 1/2 = 2,5.

1 : 2 = 0,5;

0,5 + 2 = 2,5.

1 3/8 = 1,37.

3 : 8 = 0,37;

0,37 + 1 =1,37.

0,35 * 51,75 * 1,2 + 1,06 * 2,5 - 1,37 - 1,06 = 21,95.

0,35 * 51,75 = 18,11;

18,11 * 1,2 = 21,73;

1,06 * 2,5 = 2,65;

21,73 + 2,65 = 24,38;

24,38 - 1,37 = 23,01;

23,01 - 1,06 = 21,95.