August 2021 0 7 Report
Решить методом алгебраического сложения:
{7х-у=34
{7х+у=22 1 Смотреть ответ imperator1795 imperator1795 14x=56
x=56/14
x=4
______
7(4)+y=22
28+y=22
y=22-28
y=-6
ответ (4,-6)
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