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vadikgrenin
@vadikgrenin
August 2022
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помогите пожалуйста 8x-13,6=6; 7x-4,2=4x+5,4;3x-(8x-7)=37
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marixxq
1)8х-13,6=6
8х=13,6+6
8х = 19,6
х = 2,45
2) 7х-4,2=4х+5,4
7х-4х=4,2+5,4
3х= 9,6
х=3,2
3) 3х-(8х-7)=37
3х-8х+7=37
-5х= -7+37
-5х=30 /* (-1)
5х= -30
х = -6
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Answers & Comments
8х=13,6+6
8х = 19,6
х = 2,45
2) 7х-4,2=4х+5,4
7х-4х=4,2+5,4
3х= 9,6
х=3,2
3) 3х-(8х-7)=37
3х-8х+7=37
-5х= -7+37
-5х=30 /* (-1)
5х= -30
х = -6