Question

Решите уравнения пожалуйста!

1) 8 2/5 - (x = 3 5/14) : 5 5/8 = 7 1/3

2) 5/12y + 2 3/9 + 1 5/8y = 5 1/18

Answer 1

Ответ:

8 2/15 - (x + 3 5/14) : 5 5/8 = 7 1/3

(x + 3 5/14) : 5 5/8 = 8 2/15 - 7 5/15

(x + 3 5 / 14) : 5 5/8 = 7 17/15 - 7 5/15

(x + 3 5/14) : 5 5/8 = 12/15

x + 3 5/14 = 12 / 15 * 5 5/8

x + 3 5/14 = 12 / 15 * 45/8

x + 3 5/14 = 12/1 * 3/8

x + 3 5/14 = 3/1 * 3/8

x + 3 5/14 = 9 / 8

x = 9 / 8 - 3 5/14

x = 1 7 / 56 - 3 20 / 56

x = - (3 20/56 - 1 7/56)

x = - 2 13/56

ОТВЕТ2

5/12y+3 2/9+1 7/8y=5 1/18

512у+1 78у=5 118-3 29

1024у+1 2124у=5 118-3 418

1 3124у=4 1918-3 418

2 724у=1 1518

у=3318:5524

у=3318*2455

у=45

Ответ: y=45