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Omsi
@Omsi
July 2022
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решите уравнение а) 4(x-7)=3x+5; б) -5x+3(3+2x)=7; в) 30-x=3(20-x); г) 2u-3(7-2u)=3; д) 12-y=5(4-2y)+10; е) 2-2(x-8)=4x-4.
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Ксения2207
Verified answer
А)4(х-7)=3х+5
4х-28=3х+5
х=33
б) -
5x+3(3+2x)=7
-5х+9+6х=7
х=-2
в)
30-x=3(20-x)
30-х=60-3х
2х=30
х=15
г)
2u-3(7-2u)=3
2u-21+6u=3
8u=24
u=3
12-y=5(4-2y)+10;
12-y=20-10y+10
9y=18
y=2
е) 2-2(x-8)=4x-4.
2-2x+16=4х-4
-6х=-22
х=
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Answers & Comments
Verified answer
А)4(х-7)=3х+54х-28=3х+5
х=33
б) -5x+3(3+2x)=7
-5х+9+6х=7
х=-2
в)30-x=3(20-x)
30-х=60-3х
2х=30
х=15
г)2u-3(7-2u)=3
2u-21+6u=3
8u=24
u=3
12-y=5(4-2y)+10;
12-y=20-10y+10
9y=18
y=2
е) 2-2(x-8)=4x-4.
2-2x+16=4х-4
-6х=-22
х=