For the following system, if you isolated x in the second equation to use the substitution method, what expression would you substitute into the first equation? (5 points) 3x + y = 8 −x − 2y = −10

Step-by-step explanation:

We have been given a system of linear equation as:

To solve our system of equation by substitution method, we need to isolate x from equation (2).

First of all, we will multiply both sides our equation by -1 as shown below.

Now, we will subtract 2y from both sides of our equation.

Therefore, we need to substitute in equation (1) to solve our given system of equations.

ou would have 12 of each

111

step-by-step explanation: