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Redundancy pervades our lives. It is often found in writing, as in "she is a popular music singer." Taking the redundancy out of this statement we have: "she is a popular singer." Music and singer were redundant. Algebra takes the redundancy out of numeric values separated by an equal sign. with algebra one merely does to one side of an equation what one does to the other side. For example if 2x is said to equal 10y, one divides both sides of the equation by 2, making x=5y. Scholars speak of elementary algebra, abstract algebra and various other kinds of algebra, but it is all merely removing redundancy.
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