Systems of equations worksheet
Every system here has exactly one solution and it is a whole-number point, because the point is chosen first and the equations are built around it. Tick substitution to get systems where one variable is already alone, or elimination for ones that line up.
Select your difficulty
Pick more than one for a sheet that mixes them.
Free math worksheets at sigmaprep.io/worksheets© 2026 Sigma Prep
Sigma Prep · sigmaprep.io/worksheets Name Systems of EquationsDate Period Solve each system. Free math worksheets at sigmaprep.io/worksheets© 2026 Sigma Prep |
Sigma Prep · sigmaprep.io/worksheets Name Systems of EquationsAnswer keyVersion 1Date Period Solve each system. Free math worksheets at sigmaprep.io/worksheets© 2026 Sigma Prep |
How to do these
- The first equation gives x = 9 - 3y.
- Put that into the second: 2(9 - 3y) - y = 4.
- 18 - 7y = 4, so y = 2, and then x = 3.
The answer is .
Where students go wrong
Stopping after finding one variable. A system has two answers and they come as a pair, so finding y = 2 is halfway. The other one is not checking: putting the point back into both equations takes ten seconds and catches every arithmetic slip.
Also called simultaneous equations, the addition method, the elimination method or the substitution method.
What you can put on this worksheet
- Set up for substitution
- →
- Set up for elimination
- →
- Is the point a solution
- Is a solution of the system and ? → No, it fails both
- One, none or infinitely many solutions
- How many solutions: and → No solution