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хомяк113
@хомяк113
June 2022
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решите все уравнения. 7 баллов
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Tom77
1)5(х-0.2)=0
5х-1=0
5х=1
х=1/5
х=0.2
2)0.8(у-7)=8
0.8у-5.6=8
0.8у=8+5.6
0.8у=13.6
у=13.6/0.8
у=17
3)5х-1/8=3
5х=3+1/8
5х=3.125
х=3.125/5
х=0.625
4)4х-1.8=5.4
4х=5.4+1.8
4х=7.2
х=7.2/4
х=1.8
5)7.6+2х=10.6
2х=10.6-7.6
2х=3
х=3/2
х=1.5
6)10+3.25х=23
3.25х=23-10
3.25х=13
х=13/3.25
х=4
1 votes
Thanks 7
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Answers & Comments
5х-1=0
5х=1
х=1/5
х=0.2
2)0.8(у-7)=8
0.8у-5.6=8
0.8у=8+5.6
0.8у=13.6
у=13.6/0.8
у=17
3)5х-1/8=3
5х=3+1/8
5х=3.125
х=3.125/5
х=0.625
4)4х-1.8=5.4
4х=5.4+1.8
4х=7.2
х=7.2/4
х=1.8
5)7.6+2х=10.6
2х=10.6-7.6
2х=3
х=3/2
х=1.5
6)10+3.25х=23
3.25х=23-10
3.25х=13
х=13/3.25
х=4