Mathematics, 19.01.2021 14:00 20170020
X-y=5 4x+y=10 x=? y=?
Answers: 2
and 
.
and 
expressions of the system of linear equations. Since the number of variables and equations are the same, there is only one solution and we can solve it by algebraic means:
(1)
(2)
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X-y=5 4x+y=10 x=? y=?...
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