AlgebraEasy–MediumSolving by elimination
Algebra practice question
If x + 2y = 6 and x − y = 3, what is the value of y?
Answer: 1
Subtract the second equation from the first: 3y = 3, so y = 1.
Common wrong answers
- If you answered 3
- 3 is the constant in the second equation.
- If you answered 4
- 4 is x, not y.
- If you answered -1
- −1 reverses the subtraction.
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