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margosahnova
@margosahnova
July 2022
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Нужно решить уравнение 7 * ( 3 + k ) = 13 + 5k
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Агния15
21+7к=13+5к
7к-5к=-21+13
2к=-8
к=-4
3 votes
Thanks 2
sashamazina
7*(3+k)-13+5k=0
21+7k-13+5k=0
8+12k=0
12k=8
k=8/12
k=2/3
0 votes
Thanks 1
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Answers & Comments
7к-5к=-21+13
2к=-8
к=-4
21+7k-13+5k=0
8+12k=0
12k=8
k=8/12
k=2/3