Question

Срочно !!! Номер 342

Answer 1

Ответ:

Пошаговое объяснение:

1. 15 4/9 - 4 4/9* 3 3/8=15 4/9-40/9*27/8=15 4/9-15=4/9

2. 81/88*(6-1 13/15*1 19/21) =81/88*(6/1-28/15*40/21) =81/88*(6/1-32/9) =81/88*(54/9-32/9) =81/88*22/9=9/4=2 1/4

3. (5 1/16-1 1/8) (5/6+3/14) =(81/16-9/8) (35/42+9/42) =(81-18/16) (44/42) =63/16*44/42=63*44/16*42=9*11/4*6=3*11/4*2=33/8=4 1/8

4.5 1/16-1 1/8* (5/6+3/14) =81/16-9/8*(5/6+3/14) =81/16-9/8(35/42+9/42) =81/16-9/8*44/42=81/16-9*44/8*42=81/16-3*11/2*14=81/16-33/28=567-132/112=435/112=3 99/112