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McGraw Hill Glencoe Algebra 2, 2012

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McGraw Hill Glencoe Algebra 2, 2012 View details

1. Expressions and Formulas

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Exercise 16 Page 7

Substitute 4 for x, 2.6 for y, and 13 for z.

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Practice makes perfect

To evaluate the given expression for x= 4, y= 2.6, and z= 13, we should substitute these values into the expression and simplify as much as possible.

3y-4z+x

SubstituteValues

Substitute values

3( 2.6)-4( 1/3)+ 4

Multiply

7.8-4(1/3)+4

MoveLeftFacToNumOne

a* 1/b= a/b

7.8-4/3+4

▼

Simplify

Write as a fraction

78/10-4/3+4

a/b=a * 3/b * 3

234/30-4/3+4

a/b=a * 10/b * 10

234/30-40/30+4

Subtract fractions

194/30+4

a/b=.a /2./.b /2.

97/15+4

a = 15* a/15

97/15+60/15

Add fractions

157/15

▼

Write fraction as a mixed number

Write as a sum

150+7/15

Write as a sum of fractions

150/15+7/15

Calculate quotient

10+7/15

Add terms

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Subchapter links

Check Your Understanding p.7

Practice and Problem Solving p.7-9

H.O.T. Problems p.9

Standardized Test Practice p.10

Spiral Review p.10

Skills Review p.10