### Concept (1)

A system of equations is two or more equations that contain the same variables. Solving systems of equations by substitution is one method to find the point that is a solution to both (or all) original equations. Besides solving systems of equations by substitution, other methods of finding the solution to systems of equations include graphing, elimination and matrices.

### Sample Problems (8)

Need help with "Solving Systems of Equations using Substitution" problems? Watch expert teachers solve similar problems to develop your skills.

Solve using substitution. Check your solution.

y = 3x + 1
y = 2x − 3
###### Problem 1
How to solve a system of equations using substitution when both equations are in y=mx+b form.

Solve using substitution. Check your solution.

x = 4y − 2
2x + y = 14
###### Problem 2
How to solve a system of equations using substitution when one variable is already isolated.

Solve using substitution. Check your solution.

-2x + y = 8
3x + 2y = 9
###### Problem 3
Math homework help video explaining how to solve a system of equations when neither equation has an isolated variable.
###### Problem 4
Solving a system of equations using substitution when both equations already have y isolated
###### Problem 5
Using substitution to write and solve a system of equations to model a word problem
###### Problem 6
Solving a system of equations using substitution when one variable is already isolated
###### Problem 7
Solving a system of equations using substitution when neither variable is isolated
###### Problem 8
Solving a 3 x 3 system of equations using substitution