How many solutions does the equation have?
Simplify both sides. If the x terms are the same and the numbers match, every x works (infinite). If the numbers differ, no x works (none). Otherwise there is one solution.
Loading a question…
You've done today's 10 free questions.
Come back tomorrow for 10 more, or get unlimited practice with a membership.
Want more today? Print 20 more questions free, with the answers.
Already a member? Sign in.
See worked examples
How many solutions does the equation x + 5 = 3x − 10 have? Write one, none or infinite.
Answer: one
How many solutions does the equation −5x − 5 = −5x − 2 have? Write one, none or infinite.
Answer: none
How many solutions does the equation −5x + 12 = −5x + 15 have? Write one, none or infinite.
Answer: none
Tip: Simplify both sides. If the x terms are the same and the numbers match, every x works (infinite). If the numbers differ, no x works (none). Otherwise there is one solution.
Print a worksheet of this skill New questions and an answer key, free.
Up next
- Ready for more Solve two-step equations Class 9
- Need a warm-up? One-step equations: add and subtract Class 7
Print a free worksheet with answers (20 questions).
Practise without limits
Members practise as much as they like, every day, and get the printable packs and lessons too.