Question

Select the correct answer from each drop-down menu.
Consider this system of linear equations:

22x − y = -23 (equation 1)

11x + 12y = 1 (equation 2)

To find the value of x, you need to substitute in equation 2.
The value of x is .

Answer 1

Answer:

this is the answer

Step-by-step explanation:

Answer 2

The value of x = -1.

What is the substitution method?

In solving equations in two variables there are many methods to solve but here we will discuss the substitution method only.

As there are two equations and two variables, we find the value of one variable in terms of the other variable, then substitute that value in the other given equation, hence we get an equation in one variable and then we solve the same using the concepts of adding, subtracting or multiplying.

Solving the problem

22x-y= -23 equation 1

11x+12y = 1 eqaution 2

Finding the value of x we substitute the value of y in x

y = 22x+23 from equation 1

Substituting the value of y in equation 2.

11x + 12(22x+23) = 1

11x + 264x +276 = 1

275x = -275x

hence x = -1

So the solution to the problem is x = -1.

Learn more about Substitution method here

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