X:0,8=23:4 9X-7=6x+14 9-7(X+3)=5-6X СРОЧНО! 10 б.. Created by Валерия1031. matematika-ru

X:0,8=23:4 9X-7=6x+14 9-7(X+3)=5-6X СРОЧНО! 10 б...

Валерия1031 @Валерия1031

July 2022 1 4 Report

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 Спасибо большое❤

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