Question

(x-y=7,(x + y = 23;​

Answer 1

я извиняюсь что не сам решал)

но надеюсь пойдет)

Answer 2

It looks like you have a system of two linear equations with two variables, x and y:

Equation 1: x - y = 7 Equation 2: x + y = 23

You can solve for x and y using various methods. One common method is the substitution method:

From Equation 2, you can isolate one of the variables, say y: y = 23 - x

Now substitute this value of y into Equation 1: x - (23 - x) = 7

Simplify the equation: x - 23 + x = 7 2x - 23 = 7

Add 23 to both sides: 2x = 30

Divide by 2: x = 15

Now that you have the value of x, you can substitute it back into the equation for y: y = 23 - x y = 23 - 15 y = 8

So, the solution to the system of equations is x = 15 and y = 8.