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McGraw Hill Integrated II, 2012 View details

1. Angles of Triangles

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Exercise 55 Page 343

Introduce variables.

Practice makes perfect

To be able to use algebra, let's introduce variables and use these variables to write equations to express the information given in the question.

Information	Expression
Number of video games Joey has.	j
Number of video games Solana has.	s
Number of video games Melissa has.	m
Joey has 4 more video games than Solana.	j=s+4
Joey has half as many video games as Melissa.	j=m/2
Together they have 24 video games.	j+s+m=24