Question

Найдите решение системы уравнений способом подстановки 2х+3х+у=11

Answer 1

2х+3х+3у=11
7х+21у-6х=-59

5х+3у=11
х+21у=-59
из второго ур-я    х=-59-21у
подставим в первое
5(-59-21у)+3у=11
-295-105у+3у=11
-102у=306
у=-3
х=-59-21*(-3)=59+63=4

Answer 2

Solving the System of Equations Using Substitution Method

To solve the system of equations 2x + 3x + y = 11 using the method of substitution, we can follow these steps:

1. Solve one of the equations for one variable. 2. Substitute the expression obtained in step 1 into the other equation. 3. Solve for the remaining variable.

Let's proceed with solving the given system of equations using the above method.

Step 1: Solve for one variable in the first equation. We have the equation 2x + 3x + y = 11. Combining like terms, we get 5x + y = 11.

Step 2: Substitute the expression obtained in step 1 into the other equation. We don't have another equation to substitute into, so we can't proceed with the substitution method for this particular system of equations.

Unfortunately, it seems that the system of equations provided is incomplete, as there is only one equation given. If you have another equation to work with, please provide it, and I'd be happy to help you solve the system using the substitution method.