Question

X + y = 12,x - y = 2.​

Answer 1

Ответ:

12/2=6 половина

6+6=12

6-1=5 у

6+1=7 х

7+5=12

Answer 2

To solve this system of equations:

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

You can use the method of elimination or substitution. I'll show you how to solve it using the elimination method.

First, add both equations together to eliminate the variable $y$:

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

This simplifies to:

$2x = 14$

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

$x = \frac{14}{2} = 7$

Now that you have the value of $x$, you can substitute it into either of the original equations to find the value of (y.

Let's use the second equation, $x - y = 2$, and substitute $x = 7$:

$7 - y = 2$

Subtract 7 from both sides:

$-y = 2 - 7$

$-y = -5$

Now, divide both sides by -1 to solve for $y$:

$y = 5$

So, the solution to the system of equations is $x = 7$ and $y = 5$.