Question 1083085
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Two numbers are 
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x and y, these two numbers



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such that if 11 is added to the first number, a number twice the second number is obtained. 
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{{{x+11=2y}}}



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If 20 is added to the second number, the number obtained is twice the first number.
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{{{y+20=2x}}}



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Solve this system of equations:  {{{system(x+11=2y,2x=y+20)}}}