[tex]\displaystyle\bf\\+\left \{ {{x-y=-6} \atop {x+y=10}} \right. \\---------\\2x=4\\\\x=4:2=2\\\\y=10-x=10-2=8\\\\Otvet \ : \ B) \ \ (2 \ ; \ 8)[/tex]
Объяснение:
{х-у= -6
{х+у=10
+ ———
2х= 4
х=4:2
х=2
2+у=10
у=10-2
у=8
(2;8)
ответ: В
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[tex]\displaystyle\bf\\+\left \{ {{x-y=-6} \atop {x+y=10}} \right. \\---------\\2x=4\\\\x=4:2=2\\\\y=10-x=10-2=8\\\\Otvet \ : \ B) \ \ (2 \ ; \ 8)[/tex]
Объяснение:
{х-у= -6
{х+у=10
+ ———
2х= 4
х=4:2
х=2
2+у=10
у=10-2
у=8
(2;8)
ответ: В