Предмет: Математика, автор: Викусяндрия

5 теннисных мячей и 3 ракетки стоят вместе 2585 рублей,а 7 мячиков и 7 ракеток 5551.сколько стоят 3 мячика и 5 ракеток?

Ответы

Автор ответа: luasiana

0

5х+3у=2585 5х+3у=2585 5х+3у=2585 2х= 206 х=103 (рубля тен мяч)
7х+7у=5551 х+у=793 -3х-3у=2379

у=793-103=690 рублей ракетка

3*103+5*690=309+3450=3759 рублей стоят 3 мяча и 5 ракеток

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