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Ghallager
@Ghallager
July 2022
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решите уравнение:
а) 2/3x+4/9x=3,2
б) 5/12x-4/15x=0,51
в) x-0,2x=8/15.
СРОЧНО!!!
ЗАРАНЕЕ СПАСИБО)
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евг05
Verified answer
А) 2/3х+4/9х=3,2
6/9х+4/9х=3,2
10/9х=3,2
х=32/10:10/9
х=288/100
х=2,88
б) 5/12х-4/15х=0,51
х*(25/60-16/60)=0,51
х*9/60=0,51
х*3/20=0,51
х*0,15=0,51
х=0,51/0,15
х=3,4
в) х-0,2х=8/15
0,8х=8/15
х=8/15 : 8/10
х=8/15*10/8
х=10/15
х=2/3
17 votes
Thanks 23
Ghallager
спасибо тебе большое!)))
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Answers & Comments
Verified answer
А) 2/3х+4/9х=3,26/9х+4/9х=3,2
10/9х=3,2
х=32/10:10/9
х=288/100
х=2,88
б) 5/12х-4/15х=0,51
х*(25/60-16/60)=0,51
х*9/60=0,51
х*3/20=0,51
х*0,15=0,51
х=0,51/0,15
х=3,4
в) х-0,2х=8/15
0,8х=8/15
х=8/15 : 8/10
х=8/15*10/8
х=10/15
х=2/3