Ответы и объяснения

2014-01-22T13:00:49+00:00
5/8(2x-y)-(1/4x+3/8y)=5/8*2x-5/8*y-(1/4x+3/8y)=10/8x-5/8y-1/4x-3/8y=5/4x-1/4x-5/8y-3/8y=x-y