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Валерия1031
@Валерия1031
July 2022
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X:0,8=23:4
9X-7=6x+14
9-7(X+3)=5-6X
СРОЧНО!
10 б.
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X:0,8=23:4
х÷0,8=5,75
х=5,75*0,8
х=4,6
********
9X-7=6x+14
9х-6х=14+7
3х=21
х=21÷3
х=7
*********
9-7(X+3)=5-6X
9-7х-21=5-6х
-7х-12=5-6х
-7х+6х=5+12
-х=17
х= - 17
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Валерия1031
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Answers & Comments
Verified answer
X:0,8=23:4х÷0,8=5,75
х=5,75*0,8
х=4,6
********
9X-7=6x+14
9х-6х=14+7
3х=21
х=21÷3
х=7
*********
9-7(X+3)=5-6X
9-7х-21=5-6х
-7х-12=5-6х
-7х+6х=5+12
-х=17
х= - 17