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54065
@54065
July 2022
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решите уравнение 2|х|+3|х|-18=|х|-7|х|+15
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IrkaShevko
Verified answer
5|x| + 6|x| = 15 + 18
11|x| = 23
|x| = 23/11
x = -2 1/11 и x = 2 1/11
3 votes
Thanks 6
nsd1984
[x] (2+3) -18= [x] (1-7) +15
5[x] -18= -6 [x] +15
11[x]=33
[x]=3
х=3 и х=-3
3 votes
Thanks 6
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Answers & Comments
Verified answer
5|x| + 6|x| = 15 + 1811|x| = 23
|x| = 23/11
x = -2 1/11 и x = 2 1/11
5[x] -18= -6 [x] +15
11[x]=33
[x]=3
х=3 и х=-3