SOLUTION: My uncle is now 21 years older than me. In 8 years, he will be twice as old as my age. What is our present age?

Question 469144: My uncle is now 21 years older than me. In 8 years, he will be twice as old as my age. What is our present age?
Answer by Tatiana_Stebko(1539) (Show Source): You can put this solution on YOUR website!
Let x is my present age
Let y is my uncle present age
My uncle is now 21 years older than me, then
In 8 years I'll be years old, my uncle will be years old, and he will be twice as old as my age, so
The system:

is my present age
is my uncle present age
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