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Тамерлан333
@Тамерлан333
August 2022
1
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Я не могу в алгебру, помогите
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Айнур8А
А) 4• (х-1) = 8•(2-х)
4х-4 = 16-8х
4х+8х=16+4
12х=20
х= 1,67
б) -6•(2х-5)= 9•(х+1)
-12х+30=9х+9
-12х-9х= 9-30
-21х=-21
х=1
в) 0.6•(х-9)=0.2•(23-2х)
0.6х-5.4=4.6-0.4х
0.6х+0.4х=4.6+5.4
1х=10
х=10
г)6•(х-3)=3•(15-х)
6х-18=45-3х
6х+3х=45+18
9х=63
х=7
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Answers & Comments
4х-4 = 16-8х
4х+8х=16+4
12х=20
х= 1,67
б) -6•(2х-5)= 9•(х+1)
-12х+30=9х+9
-12х-9х= 9-30
-21х=-21
х=1
в) 0.6•(х-9)=0.2•(23-2х)
0.6х-5.4=4.6-0.4х
0.6х+0.4х=4.6+5.4
1х=10
х=10
г)6•(х-3)=3•(15-х)
6х-18=45-3х
6х+3х=45+18
9х=63
х=7