Exercise 27

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

  1. \({-3.8z-2.5t}\)

  2. \({-5.2s-6.7s-5.4y-z^{2}}\)

  3. \({-1.5t-4.5s^{2}+1.3t^{2}}\)

  4. \({8.8y+2.3y}\)

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