Предмет: Математика, автор: nivava196868

2.Раскройте скобки и приведите подобные слагаемые: а) 3(а-4)-7(а+2)-5(2а-8); б) 4(5-3х)-(11-х); в) -0,4(6-4у)-(-3,5+1,5у)+1,9; г) -6(х+у)+3(2х-у); 3.Решите уравнение: 3(2х+8)-(5х+2)=0 4. Раскройте скобки и найдите значение выражения: 23,6+(14,5-30,1)-(6,8+1,9)

Ответы

Автор ответа: thht455

2.a)-14a+14

б)9-11x

в)-0,1(-30-y)

г)-9y

3.-21,6

4.-0,7

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