Question

2 x + y =11,3 x - y = 4;​

Answer 1

Ответ:

точное решение на картинке

Answer 2

To solve this system of equations, you can use either the substitution method or the elimination method. I'll show you how to solve it using the elimination method.

Here are your original equations:

1. $2x + y = 11$
2. $3x - y = 4$

First, let's eliminate $y$ by adding Equation 1 and Equation 2:

$(2x + y) + (3x - y) = 11 + 4$

This simplifies to:

$5x = 15$

Now, divide both sides by 5:

$x = 3$

Now that you know the value of $x$, substitute it back into either Equation 1 or Equation 2 to solve for $y$. Let's use Equation 1:

$2x + y = 11$

$2(3) + y = 11$

$6 + y = 11$

Subtract 6 from both sides:

$y = 5$

So, the solution to the system of equations is $x = 3$ and $y = 5$.