Question

Срочно, 20 баллов
решите уравнение:
13-(5×+11)=6×
6(1-5×)=5(1+6)
3×-(×-19)=2×

Answer 1

Объяснение:

$13 - (5x + 11) = 6x \\ 13 - 5x - 11 = 6x \\ 2 - 5x = 6x \\ - 5x - 6 x= - 2 \\ - 11x = - 2 \\ x = \frac{2}{11}$

$6(1 - 5x) = 5(1 + 6) \\ 6 - 30x = 5 \times 7 \\ 6 - 30x = 35 \\ - 30x = 35 - 6 \\ - 30x = 29 \\ x = - \frac{29}{30}$

$3x - (x - 19) = 2x \\ 3x - x + 19 = 2x \\ 2x + 19 = 2x \\ 19 = 0$

х ∈ ∅

Answer 2

1) 13-5х-11=6х
-5х-6х=11-13
11х=2
х=2/11

2) x=- 29/30

3) 3х-(х-19)=2х
3х-х+19=2х
2х+19=2х
2х-2х=-19
0=-19