### Home > CCA > Chapter A > Lesson A.1.8 > Problem A-84

A-84.

Simplify each expression below as much as possible. Homework Help ✎

Flip subtraction to addition.

3

*y*+ −*y*+ 5*x*+ 3 + −7*x*Remove zero pairs.

2

*y*+ −2*x*+ 3Remember to remove unnecessary signs

(Example:*x*+ −2 would be*x*− 2).2

*y*− 2*x*+ 3

Follow the steps described in part (a).

Remember a negative multiplied by a negative is a positive.

Remember you cannot add variables with different exponent values. (Example: you cannot add

*x*+*x*^{2})2

*x*^{2}+ 3*x*+ 6

Follow the steps explained in part (a) and remember the hints in part (b).