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missvolkova2001
@missvolkova2001
June 2022
2
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1)15-3 (х -2)=7-х
2)44 целых три четвертых-(14,25-11 целых одна вторая)
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Answers & Comments
Jane131
15-3(х-2)=7-х;
15-3х+6=7-х
-3х+х=-15-6+7
-2х=-14
х=-7
0 votes
Thanks 0
mariashew4nko
минус на минус дает плюс -3*-2=6
Jane131
Я написала с плюсом
mariashew4nko
Тогда, прошу прощение, у меня изночально другое решение показывало
mariashew4nko
-2х=-14
х=-7 ошибка: х= -14/-2= +7
mariashew4nko
1) 15-3(х-2)=7-х
15-3х+6=7-х
21-3х=7-х
-3х+х=7-21
-2х=-14
2х=14
х=7
2) 44,75-(14,25-11,5)= 44,75-2,75=42
!!!!3/4= 0.75, 1/2= 0.5
0 votes
Thanks 0
mariashew4nko
2)3/4= 0.75, 1/2= 0.5
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Answers & Comments
15-3х+6=7-х
-3х+х=-15-6+7
-2х=-14
х=-7
х=-7 ошибка: х= -14/-2= +7
15-3х+6=7-х
21-3х=7-х
-3х+х=7-21
-2х=-14
2х=14
х=7
2) 44,75-(14,25-11,5)= 44,75-2,75=42
!!!!3/4= 0.75, 1/2= 0.5