Предмет:
МатематикаАвтор:
kinley2 бочка-х
1 - 2х
3 - 2х+72
х+2х+2х+72=1500
5х+72=1500
5х=1428
х=285,6 л
у 1 бочке 285*2= 571,2л
у 3 бочке 571,2+72=643,2л
у 2 бочке 285,6л
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