Пошаговое объяснение:
1/3 t+7/12 t -1/4 t=t•(1/3+7/12-1/4)=
=t•(4/12+7/12-3/12)=t•8/12=1/8•8/12=1/12
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Пошаговое объяснение:
1/3 t+7/12 t -1/4 t=t•(1/3+7/12-1/4)=
=t•(4/12+7/12-3/12)=t•8/12=1/8•8/12=1/12