by substitution medthod
2x=20+3y,y=x-13/2
step by step explanation pls
Answers
Step-by-step explanation:
Solve a system of equations using the substitution method.
· Recognize systems of equations that have no solution or an infinite number of solutions.
· Solve application problems using the substitution method.
Introduction
A graph can be used to show the solution for a system of two linear equations. However, accurately determining the solution from a graph is not always easy or accurate. For example, where do you think the two lines shown below intersect?
It looks like they might intersect at (1.8, –0.7)—though this is only an estimate. In cases like this, you can use algebraic methods to find exact answers. One method to look at is called the substitution method. You solve one equation for one variable and then substitute this expression into the other equation.