Решите уравнение 1) (3/5x-1 1/3)•15=7 2)( 2/3+5/7x)•21=29 - вопрос №8247553135113157223572129 от Nastyapetrushicheva 28.03.2020 11:58

Question

Математика: Решите уравнение 1) (3/5x-1 1/3)•15=7 2)( 2/3+5/7x)•21=29

Nastyapetrushicheva · Answer

1) (3/5x-1 1/3)•15=73/5x-1 1/3=7/153/5x=7/15 + 1 1/33/5x=7/15 + 1 5/153/5x = 1 4/5x = 1 4/5 : 3/5x = 9/5 * 5/3x=32)( 2/3+5/7x)•21=292/3+5/7x=29/215/7x=29/21 - 2/35/7x = 29/21 - 14/215/7x = 5/7x = 1...