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Draggi906
@Draggi906
July 2022
2
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Упростить и найти значения выражений.
1) 7y - 2 - 3y = 2y + 12 - 5y
2) -3 * (5m + 4n) + 8 * (6m - 4n), если 3m-4n=1
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Answers & Comments
claynexjinushi
1)7y-2-3y=2y+12-5y
7y-3y-2y+5y=12+2
7y=14
y=2
0 votes
Thanks 2
ирэн79
1)7у-2-3у=2у+12-5у
4у-2=12-3у
4у+3у=2+12
7у=14
у=14:7
у=2
2)-3•(5m+4n)+8•(6m-4n)= -15m- 12n+ 48m-32n=33m-44n=11
1 votes
Thanks 1
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Answers & Comments
7y-3y-2y+5y=12+2
7y=14
y=2
4у-2=12-3у
4у+3у=2+12
7у=14
у=14:7
у=2
2)-3•(5m+4n)+8•(6m-4n)= -15m- 12n+ 48m-32n=33m-44n=11