SOLUTION: Twice one number plus a second number is 42, and the first number minus the second number is -6. Find the two numbers.

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Question 392683: Twice one number plus a second number is 42, and the first number minus the second number is -6. Find the two numbers.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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Twice one number plus a second number is 42, and the first number minus the second number is -6.
Find the two numbers.
:
2x + y = 42
x - y = -6
-------------adding eliminates y. find x
3x = 36
x = 36%2F3
x = 12
:
Find y
2(12) + y = 42
y = 42 - 24
y = 18
:
Check solutions in the 2nd equation
12 - 18 = -6