No.
I assume you mean, with different denominators. If you want to add the fractions, subtract them, or compare them (determine which one is greater), you have to convert them to similar fractions (fractions with the same denominator) first. Converting to similar fractions is not necessary, and usually doesn't even help, if you want to multiply or divide fractions.
Finding the LCM will help you add and subtract fractions. Finding the GCF will help you reduce fractions.
fractions having same denominators are like fractions & others are unlike fractions
LCD (lowest common denominator) refers to fractions and your question did not include any fractions. However, assuming that you're looking to reduce 75/275, the answer is 3/11.
Finding the LCM will make adding and subtracting fractions easier.
no
yes but some shortcuts are too risky
There aren't any.
fractions that can not be simplified any more
You should not have any remainders in fractions!
The concept of consecutive has no meaning for fractions. This is because there are infinitely many fractions between any two fractions. And between any two of them, there are infinitely many, and so on. As a result, there cannot be any "next" fraction.
No there is none sadly
Like fractions
There is no "after" in the context of fractions. They are infinitely dense: what that means that between any two fractions, there are infinitely many fractions. And between any two of them there are infinitely many, and so on.
There are no shortcuts, actually.
It is often unwise to take shortcuts.
When you bake something completely from scratch... that is, not using a mix or any shortcuts.