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idok1977
@idok1977
August 2022
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tmarisha722
1. 3х-15=х+3
3х-х=3+15
2х=18
х=9
2. 7-3х=х+11
-3х-х=11-7
-4х=4
х= - 1
3. 2(х+3)=х+13
2х+6=х+13
2х-х=13-6
х=7
4. 4(5-х)=3х-1
20-4х=3х-1
-4х-3х=-1-20
-7х=-21
х=3
5.3(х-2)=х+4
3х-6=х+4
3х-х=4+6
2х=10
х=5
6. 5(х-1)=4х+3
5х-5=4х+3
5х-4х=3+5
х=8
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Answers & Comments
3х-х=3+15
2х=18
х=9
2. 7-3х=х+11
-3х-х=11-7
-4х=4
х= - 1
3. 2(х+3)=х+13
2х+6=х+13
2х-х=13-6
х=7
4. 4(5-х)=3х-1
20-4х=3х-1
-4х-3х=-1-20
-7х=-21
х=3
5.3(х-2)=х+4
3х-6=х+4
3х-х=4+6
2х=10
х=5
6. 5(х-1)=4х+3
5х-5=4х+3
5х-4х=3+5
х=8