Ответ: x=-1 ; y=2
[tex]\left \{ {{ - 6(4 - x) + 4(y + 5) = -2} \atop {11(1 + x) - 9(7 - y) = - 45}} \right. \\ [/tex]
[tex]\left \{ {{ - 24 + 6x + 4y + 20 = - 2} \atop {11 + 11x - 63 + 9y = - 45}} \right. \\ [/tex]
[tex]\left \{ {{ - 24 + 6x + 4y + 20 = - 2} \: \: \: \times|9 \: \: \: \: \atop {11 + 11x - 63 + 9y = - 45 \: \: \: \times| - 4 }} \right. \\ [/tex]
[tex]\left \{ {{ - 216 + 54x + 36y + 180 = - 18} \atop { - 44 - 44x + 252 - 36y = 180 \: \: \: \: }} \right. \\ [/tex]
[tex]\left \{ {{54x + 36y - 36 = - 18} \atop { - 44x - 36y + 208 = 180}} \right. \\[/tex]
[tex]\left \{ {{54x + 36y = - 18 + 36 \: \: \:} \atop { - 44x - 36y = 180 - 208}} \right. \\[/tex]
[tex]\left \{ {{54x + 36y = 18 \: \: \: \: \: \: } \atop { - 44x - 36y = - 28}} \right. + \\[/tex]
[tex]10x = - 10 \\ x = - 1 \: \: \: \: \: \: [/tex]
[tex]54x + 36y = 18 \: \: \: \: \: \: \: \: \: \: \: \: \\ 54 \times ( - 1) + 36y = 18 \\ - 54 + 36y = 18 \: \: \: \: \: \: \: \: \: \: \: \: \\ 36y = 18 + 54 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ 36y = 72 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ y = 2 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: [/tex]
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
Ответ: x=-1 ; y=2
[tex]\left \{ {{ - 6(4 - x) + 4(y + 5) = -2} \atop {11(1 + x) - 9(7 - y) = - 45}} \right. \\ [/tex]
[tex]\left \{ {{ - 24 + 6x + 4y + 20 = - 2} \atop {11 + 11x - 63 + 9y = - 45}} \right. \\ [/tex]
[tex]\left \{ {{ - 24 + 6x + 4y + 20 = - 2} \: \: \: \times|9 \: \: \: \: \atop {11 + 11x - 63 + 9y = - 45 \: \: \: \times| - 4 }} \right. \\ [/tex]
[tex]\left \{ {{ - 216 + 54x + 36y + 180 = - 18} \atop { - 44 - 44x + 252 - 36y = 180 \: \: \: \: }} \right. \\ [/tex]
[tex]\left \{ {{54x + 36y - 36 = - 18} \atop { - 44x - 36y + 208 = 180}} \right. \\[/tex]
[tex]\left \{ {{54x + 36y = - 18 + 36 \: \: \:} \atop { - 44x - 36y = 180 - 208}} \right. \\[/tex]
[tex]\left \{ {{54x + 36y = 18 \: \: \: \: \: \: } \atop { - 44x - 36y = - 28}} \right. + \\[/tex]
[tex]10x = - 10 \\ x = - 1 \: \: \: \: \: \: [/tex]
[tex]54x + 36y = 18 \: \: \: \: \: \: \: \: \: \: \: \: \\ 54 \times ( - 1) + 36y = 18 \\ - 54 + 36y = 18 \: \: \: \: \: \: \: \: \: \: \: \: \\ 36y = 18 + 54 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ 36y = 72 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ y = 2 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: [/tex]