Предмет: Математика, автор: ekesovaajsuluu

помогите срочно 2 (х-7)+6=20-2х​

Аноним: 2*(х-7)+6=20-2х​
2x-14+6=20-2x
2x+2x=20+14-6
4x=28
x=28/4
x=7
ekesovaajsuluu: класс

Ответы

Автор ответа: stas1515
1

Ответ:

2х-14=20-2х

2х+2х=20+14

4х=34

дальше уже сам

ekesovaajsuluu: Ещё не понимаю
pnx2020: потом x=34÷4 x=8.5
ekesovaajsuluu: 15 (а-6)+5=3 (5+2а)-4а
pnx2020: добавь новый вопрос с этим примером, тогда отвечу
pnx2020: тут прост неудобно
pnx2020: ?м
ekesovaajsuluu: ok
Автор ответа: Аноним
1

Ответ:

Пошаговое объяснение:

2*(х-7)+6=20-2х​

2x-14+6=20-2x

2x+2x=20+14-6

4x=28

x=28/4

x=7

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