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SoldBee
@SoldBee
July 2022
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0,7(4a+3b)−6(0,3a+0,7b)
при a=1,b=−4
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nakiba321
Сначала упрощаем выражение
0,7(4а+3b)-6(0,3a+0,7b)=2,8a+2,1b-1,8a-4,2b=a-2,1b
теперь подставляем
1-2,1*(-4)=9,4
Ответ: 9,4
1 votes
Thanks 1
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Answers & Comments
0,7(4а+3b)-6(0,3a+0,7b)=2,8a+2,1b-1,8a-4,2b=a-2,1b
теперь подставляем
1-2,1*(-4)=9,4
Ответ: 9,4