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Simplify variable expressions

To simplify an algebraic expression generally means to remove symbols of grouping and combine like terms.

Simplify 5x+(x-7)2

 5x+(x-7)2 = 5x+2x-14 = 7x-14

Simplify 3(y-5)-(2y-7)

 3(y-5)-(2y-7) = 3y-15-2y+7 Distributive property = (3y-2y)+(-15+7) Group like terms = y-8