Question

решите систему уравнений [4х-y=11
.......................................................[6х-2y=13

Answer 1

У меня получилось: x=4.5;  y=7

Answer 2

4x-y=11
6x-2y=13
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y=4x-11
6x-2(4x-11)=13
6x-8x+22=13
-2x=13-22
-2x=-9, x=9/2, x=4,5
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y=4.4,5-11, y=18-11,y=7
/x,y/=/4,5, 7/
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