Номер 333.
Вычислите: а) 90 ⋅ 25 + 10 ⋅ 25; б) 123 ⋅ 27 - 23 ⋅ 27; в) 23 ⋅ 16 + 16 ⋅ 27; г) 40 ⋅ 87 - 39 ⋅ 87.
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