Решите систему уравнений 8p-5q=-11 5p-4q=-6

Question

Решите систему уравнений
8p-5q=-11
5p-4q=-6

Answer 1

8p-3q=-11|*(-4)
5p-4q=-6|*3
-32p+12q=44
15p-12q=-18
-32p+12q+15p-12q=44-18
17q=26
q=26:17
q=1.5
-32p+18=-18
-32p=-18-18
-32p=-32
p=32:32
p=1
Ответ:p=1;q=1.5

Answer 2

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