Respuesta :

Define x and y:
Let the first number be x and the second number be y.

Setup the equations:
y + 2x = 10 ----------- (1)
2y + x = 11  ----------- (2)

Solve x;

From (1):
y + 2x = 10
y = 10 - 2x  ----------- Sub into (2)

2(10 - 2x) + x = 11
20 - 4x + x = 11
20 - 3x = 11
3x = 20 - 11
3x = 9
x = 3  ----------- Sub into (1)

y + 2(3) = 10 
y = 10 - 6
y = 4

Find the numbers:
First number = x = 3
Second number = y = 4

Answer: The two numbers are 3 and 4.

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