y=2x

x+y=12

- All categories
- Pre-Algebra Answers 12,294
- Algebra 1 Answers 25,192
- Algebra 2 Answers 10,410
- Geometry Answers 5,147
- Trigonometry Answers 2,632
- Calculus Answers 5,955
- Statistics Answers 3,012
- Word Problem Answers 10,010
- Other Math Topics 6,541

81,193 questions

85,287 answers

2,150 comments

68,722 users