A first number plus twice a second number is 6. Twice the first number plus the second totals 30. Find the numbers.

Question

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Answer 1

Hi Emily, for this type of problem, set up a system of equations. Let x represent the first number, and y represent the second number.

 

Equation 1:

 

x + 2y = 6

 

Equation 2:

 

2x + y = 30

 

System of equations:

 

  x + 2y =   6

2x +   y = 30

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You can solve this by either substitution or elimination.

 

Questions?