Exercise 28

Simplify each expression, if possible, by combining like terms.

  1. \({1.3z-0.4z}\)

  2. \({-5.7s^{2}-7.6s^{2}+4.5y^{2}}\)

  3. \({0.8y-8.8-2.7t-5.1t}\)

  4. \({5t^{2}+2.5t}\)

in-context