guskowaolga guskowaolga

20-12-2016
Mathematics

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2 холодильника 3 микроволновки 4 чайника дороже на 30000 чем 1 холодильник 3 микроволновки 5 чайников на сколько холодильник дороже чайника?

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mathssydney mathssydney

20-12-2016

Системой двух уравнений решайте
2х+3м+4ч -30000 = 1x+3м+5ч
2х+3м+4ч-1x-3м-5ч=30 000
1х-1ч=30000
то есть 1 холодильник дороже 1 чайника на 30 000 как раз

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