A numbmer is divided by 2, then 6 is submtacted from the result.
what operations are needed to return to the original number?
I am going to say:
x/2 -6 the operations needed are
multiplication and addition to get right answer?
R=Result
x/2-6=R Multiply both sides with 2
x-12=2R
x = 2R+12 = 2(R+6)
i don't understand what you did?
X/2 - 6 = R
+ 6 +6
X/2 = R + 6
* 2 = * 2
x = 12
is the answer the operations needed multiplicaton and addition to get right answer?
see
http://www.jiskha.com/display.cgi?id=1321287304
To return to the original number after dividing by 2 and subtracting 6, you would need to perform the inverse operations, which are addition and multiplication. Here's how you can do it step by step:
1. Start with the current number.
2. Add 6 to the current number. This will undo the subtraction of 6.
3. Multiply the result by 2. This will undo the division by 2 and return you to the original number.
So, the operations needed to return to the original number would be addition and multiplication.