When given an algebraic expression involving subtraction why is it best to rewrite the expression using addition before identifying the terms?

Match the equivalent expressions. x - 3y + 12 12 - 3y - 2x + x + 2x 3x + 2y - 2x + y + 12 3y + 12 3x + y - 12 4y + 3y + 3x - 6y - 10 - 2 x + 3y + 2x - 3x + 7 + 5 x + 3y + 12 5 + 2y + 7x - 4x + 3y - 17

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2