3)
5х-4у=11
2х+4у=10
7х = 21; х=3
2*3+4у=10; 6+4у=10; 4у=4; у=1
Ответ: (3; 1)
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3)
5х-4у=11
2х+4у=10
7х = 21; х=3
2*3+4у=10; 6+4у=10; 4у=4; у=1
Ответ: (3; 1)