Question

{ x+y= - 1985{ x-y= -1

Answer 1

Выразим из второго уравнения Х и подставим в первое
х = -1+у
-1+у +у = -1985
2у = -1984
у = -992
х = -1 -992 = -993

Answer 2

It looks like you have a system of two linear equations:

1. x + y = -1985
2. x - y = -1

You can solve this system of equations using the method of addition or elimination. Adding the two equations eliminates the variable y:

1. (x + y) + (x - y) = (-1985) + (-1)

Simplifying the equation:

2x = -1986

Now, divide both sides by 2 to solve for x:

x = -993

Now that you have the value of x, you can substitute it back into one of the original equations to find the value of y. Let's use the first equation:

x + y = -1985 (-993) + y = -1985

Add 993 to both sides to solve for y:

y = -1985 + 993 y = -992

So, the solution to the system of equations is:

x = -993 y = -992