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kamilla041
@kamilla041
August 2022
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Помогите срочно со 153!
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magicmasha
1) 5,6/(3х+12)=0,4/3 (умножаем на 3(3х+12) с двух сторон)
5,6*3=0,4(3х+12)
16,8=1,2х+4,8
1,2х=16,8-4,8=12
х=10
2) 8,7/(15+4х)=0,5/2
8,7*2=0,5(15+4х)
17,4=7,5+2х
2х=17,4-7,5=9,9
х=4,95
3) (3х+1,6)/2,4=5/1,2
1,2(3х+1,6)=5*2,4
3,6х+1,92=12
3,6х=12-1,92=10,08
х=2,8
4) 5,4/3=0,9/(4,7х-4,2)
5,4(4,7х-4,2)=0,9*3
25,38х-22,68=2,7
25,38х=2,7+22,68=25,38
х=1.
1 votes
Thanks 1
magicmasha
сейчас остальное дорешаю постепенно
magicmasha
дел много
kamilla041
ага, спасибо большое
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Answers & Comments
5,6*3=0,4(3х+12)
16,8=1,2х+4,8
1,2х=16,8-4,8=12
х=10
2) 8,7/(15+4х)=0,5/2
8,7*2=0,5(15+4х)
17,4=7,5+2х
2х=17,4-7,5=9,9
х=4,95
3) (3х+1,6)/2,4=5/1,2
1,2(3х+1,6)=5*2,4
3,6х+1,92=12
3,6х=12-1,92=10,08
х=2,8
4) 5,4/3=0,9/(4,7х-4,2)
5,4(4,7х-4,2)=0,9*3
25,38х-22,68=2,7
25,38х=2,7+22,68=25,38
х=1.