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Course: Algebra (all content) > Unit 10

Lesson 13: Evaluating expressions with unknown variables
Math
Algebra (all content)
Polynomial expressions, equations, & functions
Evaluating expressions with unknown variables
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Evaluate expressions using structure

Google Classroom

Problem

If a+b+c=−1 and x+y+z=−8,
what is −8z−8x+5a+5c−8y+5b?
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi