### Home > INT1 > Chapter A > Lesson A.1.5 > ProblemA-53

A-53.

Simplify each expression below as much as possible. Record your work in the same way you did in problem A‑51.

1. $3y − y + 5x + 3 − 7x$

$3y + −y + 5x + 3 + −7x$

Remove zero pairs.

$2y + −2x + 3$

Remember to remove unnecessary signs (Example: $x + −2$ would be $x − 2$).

$2y − 2x + 3$

1. $−1 − (−5x) − 2x + 2x2 + 7$

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 $x + x²$)

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

1. $6x + 2 − 1 − 4x − 3 − 2x + 2$

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

1. $\frac{2}{3}x−3y+\frac{1}{3}x+2y$

$\frac{2}{3}\textit{x}+\frac{1}{3}\textit{x}\ =\ \textit{x}$