Предмет: Математика, автор: aovodovaarina

в) (4k-16):2=28
г) 5x+4x=72
д) 12a-4a+22=102
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Ответы

Автор ответа: dashevecn0702
1

Ответ:

в) (4k-16):2=28

Умножим обе части на 2

4k-16=56

4k=72

k=18

г) 5х+4х=72

9х=72

х=8

д) 12а-4а+22=102

8а=80

а=10

aovodovaarina: спасибо большое только ответ 18 не правильно
dashevecn0702: А почему неправильно?
aovodovaarina: я делала задание на плотформе и было написано неверно
aovodovaarina: но всёравно спасибо огромное
Автор ответа: GunelBV
1

Ответ:

(4k-16):2=28 ответ :к=18

5х+4x=72ответ :x=8

12a -4a +22=ответ :a=10

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