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Ответ

Проверено экспертом

Ответ дан
IrkaShevko

Ответ:

(2; -3)

Пошаговое объяснение:

умножим первое уравнение на 3, второе на 5:

displaystyle left { {{1,2x - y = 5,4} atop {x+1,35y=-2,05}} right.

умножим второе уравнение на 1,2:

displaystyle left { {{1,2x - y = 5,4} atop {1,2x+1,62y=-2,46}} right.

отнимем от второго первое:

displaystyle left { {{1,2x - y = 5,4} atop {2,62y=-7,86}} right.

displaystyle left { {{1,2x - y = 5,4} atop {y=-3}} right.

подставим в первое:

displaystyle left { {{1,2x - (-3) = 5,4} atop {y=-3}} right.

displaystyle left { {{1,2x =2,4} atop {y=-3}} right.

displaystyle left { {{x=2} atop {y=-3}} right.

Ответ

Ответ дан
nurainauriz1

Ответ:

вот ответ рооаовопаужд

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