Автор - nnik30031

упростите:
1) 13*(0.3а-0.6)-14*(0.4а-0.8)

Ответ

Автор - Alex1113
1/3*3/10 а-1/3*6/10-1/4* 4/10 а+1/4*8/10= 0,1а-0,2-0,1а+0,2=0

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