Предмет: Математика, автор: phbwm5qzvz

2х+2•(-10)=-11
Пж плиз

Ответы

Автор ответа: vetalkres4808

0

2x + 2 * (-10) = -11

2x -20 = -11

2x = -11 + 20

2x = 9

x = 9/2 = 4,5

Автор ответа: goroshina85

0

Ответ: 4,5

Пошаговое объяснение:

2х + 2(-10) = -11

2х - 20 = -11

переносим -20 за знак равенства, меняя знак на противоположный:

2х = 20-11

2х = 9

х = 9 : 2

х = 4,5

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