Adriel is x years old and her younger sister is y years old. The sum of thei ages is 7. The difference of 3 times adriels age and her sisters age is 9. The related sum of the linear equation is x+y=7 3x-y=9. Solve the linear equations. Then find adriels age and her sisters age
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Home » Mathematics » Adriel is x years old and her younger sister is y years old. The sum of thei ages is 7. The difference of 3 times adriels age and her sisters age is 9. The related sum of the linear equation is x+y=7 3x-y=9. Solve the linear equations.