If x − 5 = 3x − 21, find x.
- A.6
- B.7
- C.8 ✓
- D.9
Explanation: −5 + 21 = 3x − x → 16 = 2x → x = 8.
Class 6 IMO Mathematics Olympiad practice · Algebraic Thinking · Simple Equations & Missing Numbers
← All Simple Equations & Missing Numbers questionsClass 6 · Olympiad Prep
Class 6 IMO Mathematics Olympiad practice · Algebraic Thinking · Simple Equations & Missing Numbers
← All Simple Equations & Missing Numbers questions