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zaitenok
@zaitenok
July 2022
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5 волов и 3 барана стоят 13 монет. 2 вола и 8 баранов 12 монет. Сколько стоят 1 вол и 1 баран?
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Габриээла
Verified answer
5х+3у=13
2х+8у=12
5х+3у=13
х+4у=6
5х+3у=13
х=6-4у
5(6-4у)+3у=13
30-20у+3у=13
-17у=-17
у=1
баран стоит 1 рубль
вол стоит:2 рубля
0 votes
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Answers & Comments
Verified answer
5х+3у=132х+8у=12
5х+3у=13
х+4у=6
5х+3у=13
х=6-4у
5(6-4у)+3у=13
30-20у+3у=13
-17у=-17
у=1
баран стоит 1 рубль
вол стоит:2 рубля