Question

СРОЧНО!!! РЕШИТЕ 3 ПРИМЕРА​

Answer 1

Ответ:

Пошаговое объяснение:

3x + 5 + (x + 5) = (1 - x) + 4

3x + 5 + x + 5 = 1 - x + 4

4x + 10 = 5 - x

4x + x = 5 - 10

5x = -5

x = -5 : 5

x = -1

======================

10(2 - x) + 11x = -3x

20 - 10x + 11x = -3x

20 + x = -3x

x + 3x = -20

4x = -20

x = -20 : 4

x = -5

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3x - 2(3x + 4) = 10

3x - 6x - 8 = 10

-3x - 8 = 10

-3x = 10+8

-3x = 18

x = -18 : 3

x = -6