Solving Two Equations by Substitution Part 3

There are many ways to approach finding the solution to a system of equations. Here we look at substitution. In substitution, we find a solution of one of the equations in terms of one of the variables (lets say x) then put that solution everywhere we see that variable (x). In this case we find out that some times there is no solution. If we graphed the lines, we would find them to be parallel.

Category:

Education

Tags:

• Math
• Algebra
• Linear
• Equations
• Solve
• by
• Substitution

[makunah]

diba transposing make the posite to negative?

[tqnohe]

Transposing did not make the x negative. What happens is that to get the x onto the right side of the equal sign, you subtract x from both sides. The x on the left is canceled (x - x = 0) and it shows up as a -x on the right side.

[flipz338]

you should try doing an equation like x-2y=1

but otherwise ur really helpful=)