SOLUTION: twenty-minus a number is 42.find the number

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Question 11984: twenty-minus a number is 42.find the number
Found 5 solutions by snh, bailees15, brittbad1, jake4blues, Alwayscheerful:
Answer by snh(2) About Me  (Show Source):
You can put this solution on YOUR website!
20-n=42
-20 -20
n=22
ans: n=22
subtract 20 from 20 and 42

Answer by bailees15(1) About Me  (Show Source):
You can put this solution on YOUR website!
The question is 20-X=42 so you subtract 20 from the 42 and you get -X=22 then you just move your negative sign over and your answer is (X= -22)

Answer by brittbad1(2) About Me  (Show Source):
Answer by jake4blues(1) About Me  (Show Source):
You can put this solution on YOUR website!
20-n=42
20 -20
-n=22

Answer by Alwayscheerful(414) About Me  (Show Source):
You can put this solution on YOUR website!
You first need to "translate" the english equation to an mathematical equation.
You should get something that looks like this:
20-X=42
You want the X by itself, so you MUST substract 20 from both sides
-X=22
Since -X=22, then that means X=-22
*CHECK*
20-%28-22%29=42
If you subtract a negative, you a basically adding it.
20%2B22=42
42=42
Since the last equation is true, your answer is true.
Hope this helps!