October 2021 0 9 Report
№1 Решите систему методом сложения а)3х-8у=14 б)4х+3у=24

3х+5у=1 5х-7у=-13

№2 Решите систему

х+у+z=5

2x-y+z=2

3x-2y+z=1

№3 Решите уравнение: х²-4ху+4у²+[x+y-3]=0
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