what's the answer to three less than twice a number? 3 - 2x or 2x - 3. which one is correct and why?
2006-11-07 08:22:45 · 9 answers · asked by priyaa485 1 in Science & Mathematics ➔ Mathematics
2x-3... because 2x means twice a number, and if you want 3 less than that, you would subtract 3.
2006-11-07 08:24:49 · answer #1 · answered by Rum_Punch_Girlie 3 · 1⤊ 0⤋
2x - 3 is correct.
If you're not sure, pick a number and test it. If the number was 5, then 2x-3 = 7 and 3-2x = -7. Which is three less than twice five?
For more explanation of translating words into math, check out the link below.
2006-11-07 08:28:23 · answer #2 · answered by Kylie 3 · 2⤊ 0⤋
2x-3 is correct. Twice a number is your first key word. Then you take 3 less than or 3 away from that.
2006-11-07 08:35:56 · answer #3 · answered by slider 2 · 0⤊ 0⤋
2x-3, because 2x is "a number" and if you take away three from this, you get 2x-3. The key word is 'than'. If 'than' wasn't there, you would have 'three less twice a number', which would be 3-2x.
2006-11-07 08:29:06 · answer #4 · answered by karldon 3 · 1⤊ 0⤋
2x - 3 is right because it says first...
3 Less or ( - 3 )
and
Twice a number
2 x X or ( 2x )
So 3 less then twice a number is 2x ( Twice a number ) - 3 ( 3 less )
2x - 3 is RIGHT
2006-11-07 08:33:01 · answer #5 · answered by Anonymous · 0⤊ 0⤋
2x-3 because your asking 3 les than so it has to come after the first number because you would be taking three away from that number.
2006-11-07 08:25:44 · answer #6 · answered by smellykellygirl001 1 · 1⤊ 0⤋
2x - 3 = -7 ^^ equation upload opposite of three to the two aspects (useful 3) so now the equation is : 2x=-4 so then what cases 2 is -4?? the respond is : - 2 good success- wish it help! =]
2016-10-03 09:39:46 · answer #7 · answered by ? 4 · 0⤊ 0⤋
let
2x = twice the number
- 3 = three less
- - - - - - - - - - -
2x- 3
The answer is 2x - 3
- - - - - - - - -s-
2006-11-07 08:30:50 · answer #8 · answered by SAMUEL D 7 · 0⤊ 0⤋
i would say second one because you are subtracting 3 from the number not the other way around
2006-11-07 08:24:14 · answer #9 · answered by Anonymous · 2⤊ 0⤋