Brainlag PlusClear fractions by multiplying every term, including two fractions on one side and the unknown on the bottom.
Multiply every term
Multiply both sides (every term) by the denominator to clear it.
- (2x + 1)/3 = 5
- multiply by 3: 2x + 1 = 15
- 2x = 14, so x = 7
With two denominators, multiply by a common multiple: x/2 + x/3 = 10 becomes 3x + 2x = 60, so x = 12.
The rest of this lesson and its 7 practice questions are in Plus.
Screen 1 of 2, free to read.
- 7 exam-style questions, marked as you go, each with a worked solution
- Anything you get wrong is saved to your flashcards