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yanahe
@yanahe
July 2022
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Помогите решить уравнения 2х-15=13,7у-25=45,130-4х=70,49-3х=34,9у-89=55,74-8z=2
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kami079
1 ) 2х-15=13
2х=13+15
2х=28
х=28÷2
х=14
2 ) 7у-25=45
7у=45+25
7у=70
у=10
3 ) 130-4х=70
-4х=70-130
-4х= -60
4х=60
х=60÷4
х=15
4 ) 49-3х=34
-3х=34-49
-3х= -15
3х=15
х=15÷3
х=5
5 ) 9у-89=55
9у=55+89
9у=144
у=144÷9
у=16
6 ) 74-8z=2
8z=2-74
8z= -72
z= -72÷8
z= -9
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Answers & Comments
2х=13+15
2х=28
х=28÷2
х=14
2 ) 7у-25=45
7у=45+25
7у=70
у=10
3 ) 130-4х=70
-4х=70-130
-4х= -60
4х=60
х=60÷4
х=15
4 ) 49-3х=34
-3х=34-49
-3х= -15
3х=15
х=15÷3
х=5
5 ) 9у-89=55
9у=55+89
9у=144
у=144÷9
у=16
6 ) 74-8z=2
8z=2-74
8z= -72
z= -72÷8
z= -9