Предмет: Алгебра, автор: ilyha62

пжпжпжжежежеж помогите

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Автор ответа: anastasyaandrushchen

Ответ: А) х+у=2000

110х+90у=2020

Объяснение: Так як люстра була з ціною 100%, а після вона подорожчала на 10% тобто це значить що 100%+10%=110%,а настільна лампа яка була з ціною 100% а потім подешевшала на 10% це значить що 100%-10%=90%, а разом вони коштують 2020,сподіваюся зрозуміло пояснила)

ilyha62: можещь мне еще с кое чем помоч?

anastasyaandrushchen: если получиться то да

ilyha62: ок я скину вопрос

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