I'm working on inverses and verifying that they work.. this is one of the three equations I have a question on.
2007-10-09 12:46:32 · 4 answers · asked by darlingdork 1 in Science & Mathematics ➔ Mathematics
I'll assume you meant y = 7/(7x) and you want to solve this in terms of x:
First, divide top and bottom by 7:
y = 1/x
Now multiply x and divide by y:
x = 1/y
2007-10-09 12:51:29 · answer #1 · answered by Puzzling 7 · 0⤊ 0⤋
If you think of the following:
7/7x = (7*1)/(7*x), then cancel the 7s you get 1/x. Working backwards, if you start with:
1/x and multiply it by 7/7 you get 7/(7x).
And since 7/7 equals 1, then multiplying or dividing by 7/7 does not change the actual value of your expression. Try it by substituting any value for x and see what you get.
2007-10-09 17:00:04 · answer #2 · answered by mdnif 3 · 0⤊ 0⤋
This isn't an equation, it's an expression. There is nothing to "solve" for. You can simplify it though by dividing the top and bottom by 7. This gives you 1/x.
2007-10-09 12:49:40 · answer #3 · answered by Anonymous · 0⤊ 1⤋
7/7x= 1 ?
7= 7x
x = 1
2007-10-09 12:50:03 · answer #4 · answered by Monah 3 · 0⤊ 0⤋