Question

у=1-3х и у=-х-1 уравнение​

Answer 1

$y = 1 - 3x \\ 0 = 1 - 3x \\ 3x = 1 \\ x = \frac{1}{3}$

$y = - x - 1 \\ 0 = - x - 1 \\ x = - 1$

Answer 2

Ответ:

1-3×=-×-1

1-3×+×+1=0

-2×+2=0

-2×=-2

2×=2

×=1