Question

Решите уравнение (190)

Answer 1

1 2/3х+5/6х=2 1/2+7/12-4 1/4
2 1/2х=-1 1/6
х=-1 1/6:1 2/3
х=-7/10

1 3/5у-2 4/15у=1/10-3 11/30+1 7/15
-2/3у=-1 4/5
у=-1 4/5:(-2/3)
у=2  7/10

2 1/7а+3 9/14а=11 1/7-1 1/21-2 3/14
5 11/14а=7 37/42
а=7 37/42:5 11/14
а=1 88/243

-3 2/5в-1 1/20в=-3 1/10+1 4/5-2 7/20
-4 9/20в=-3 13/20
в=-3 13/20:(-4 9/20)
в=73/89