Пошаговое объяснение:
2-22/7×(2-20/11)÷8/21=
=2-22×2/11×3/8=
=2-2×3/4=
=2-3/2=
=1/2
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Пошаговое объяснение:
2-22/7×(2-20/11)÷8/21=
=2-22×2/11×3/8=
=2-2×3/4=
=2-3/2=
=1/2