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12b-7•(b+4)=26-4b это первое уравнение
5•(3c+2)=8•(9-2с) второе уравнение
10k+2•(7k-2)=5•(4k+3)+3k третье уравнение-
Предмет:
Математика -
Автор:
mr. cleanx9zo - 4 года назад
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Ответы 1
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1)15*(а+2)=6*(2а+7)15а+30=12а+4215а-12а--30+423а=12а=12:3а=4Ответ: 42)12b-7*(b+4)=26-4b12b-7b-28=26-4b12b-7b+4b=28+269b=54b=54:9b=6Ответ:63)5*(3с+2)=8*(9-2с)15с+10=72-16с
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Автор:
dahlia - 4 года назад
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