a) What must 2 1/7 be divided by to give 1 3/7 ?
and . Since and the answer is
b) What must 3 4/5 be multiplied by to give 10 2/5?
See a.
a) What must 2 1/7 be divided by to give 1 3/7 ?
b) What must 3 4/5 be multiplied by to give 10 2/5?
It's a pre-algebra, no calculator allowed question.
Do i have to just keep guessing and substituting guesses until i get the answers? Or are there exact formulas for solving these problems? (You cant use an algebra formula because its from a pre-algebra book and algebra has not even been covered yet)
as far as the problem goes ... (because you didn't wrote 2+1/7 ... you wrote 2 1/7 same as 2/7 )
a)
(if it's 2 and 1/7 .... and 1 and 3/7 than.... )
b)
same thing as for a)
but if you mean 2 + 1/7 than just enter different values (instead of is )... but procedure is the same
P.S. you should post work, that you have been trying to do, don't ask to someone do your homework for you ...
Hi
I will attempt to walk you through the second example.
You have the following problem:
So you rearrange to get:
First lets change into an improper fraction(s):
To divide a fraction you turn one side upside down and multiply, which gives:
Which gives a result of:
You can now divide top and bottom to give:
And finally check your result:
Hope this helps