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Zdobnyakova

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Решите уравнения: 1) 2х+7=5х+13; 2) 3х-23=19-4х; 3) 1,3х+4,8=2,9х-7,2; 4) 2*(х-3...
Answer
10(2х*1)-9(х-2)+4(5х+8)=71...
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