Ответ:
(-9; 9,4)
Объяснение:
[tex]\left \{ {{4x-5y=-83} \atop {2x+5y=29}} \right. |+\\\\6x=-54\\x=\frac{-54}{6} \\x=-9\\\\2*(-9)+5y=29\\-18+5y=29\\5y=29+18\\5y=47\\y=\frac{47}{5} \\y=9,4[/tex]
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Ответ:
(-9; 9,4)
Объяснение:
[tex]\left \{ {{4x-5y=-83} \atop {2x+5y=29}} \right. |+\\\\6x=-54\\x=\frac{-54}{6} \\x=-9\\\\2*(-9)+5y=29\\-18+5y=29\\5y=29+18\\5y=47\\y=\frac{47}{5} \\y=9,4[/tex]