№1 Раскройте скобки и приведите подобные: (5x-y)-(-x+2y)
(0,3m-4)-(m-10)-(1,6m-2,4)
2(x-y)-12(-x+y)
3/4 (c-12k)-6(1/3 c+k)

№ 2 Решите уравнение:
6(4/15 x-2)-3(0,5x-1)=1,5


№ 3 Найдите область допустимых значений (ОДЗ)
(х (х-2,5))/4х
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