Question

X + y = 12,(x-y= 2;​

Answer 1

Ответ:7 и 5

Пошаговое объяснение:

x+y=12

x-y=2

Выразим из второго уравнения х

х=2+y

Подставим в первое уравнение

2+у+у=12

2у+2=12

2у=12-2

2у=10

у=10:2

у=5

Далее: т.к х=2+у,то х=2+5, х=7

Answer 2

To solve this system of linear equations for x and y:

1. You can use the method of substitution or elimination. I'll use the elimination method in this example.

Given the equations:

1. x + y = 12
2. x - y = 2

You can add both equations together to eliminate y:

(x + y) + (x - y) = 12 + 2

This simplifies to:

2x = 14

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

2x/2 = 14/2 x = 7

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

x + y = 12 7 + y = 12

Now, subtract 7 from both sides to solve for y:

7 + y - 7 = 12 - 7 y = 5

So the solution to the system of equations is:

x = 7 y = 5