September 2021 0 7 Report
Решите систему уравнений методом подстановки: 50 Б 1) x = 3.5 y
 4х - 3y = 22

2) 5х - 4у = 8
х - у = 2

И методом сложения
1) 5х + 3у - 1.4
-7х - 10у = 5
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