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What is algebra?

Algebra is a branch of Mathematics that substitutes letters for numbers ⇒ It simply means that while in Arithmetic we were having the statements like—“Ram is having 5 apples”, in Algebra we will be having the statements like—“Ram is having x apples” where value of x can be deduced from the given conditions.

Moving from Arithmetic to Algebra will look something like this: Arithmetic: 3 + 4 = 3 + 4. In Algebra it would look like: x + y = y + x

While in Arithmetic, we mostly deal with the numbers (which have a constant fixed value always), in case of Algebra, we mostly deal with the variables (which do not have a fixed value and can take different values according to the conditions governing.) For example, if we say that “Ram is having Rs 100”, we get a clear picture that how much money Ram is having. And even if next day Ram is having 100 apples instead of Rs 100, the number “100” has the same meaning in this different situation.

Now replace “100” by “x” ⇒ “Ram is having Rs x”, this does not give us a clear picture that how much money Ram is having. And if next day, Ram is having x apples, the letter “x” may not have the same value in a different situation.




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