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McGraw Hill Glencoe Algebra 2, 2012 View details

1. Expressions and Formulas

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Exercise 8 Page 7

Substitute - 2 for a, 3 for b, and 4.2 for c.

6.25

Practice makes perfect

To evaluate the given expression for a = - 2, b = 3, and c= 4.2, we should substitute these values into the expression and simplify as much as possible.

3b+2a/5-c

SubstituteValues

Substitute values

3( 3)+2( - 2)/5- 4.2

MultPosNeg

a(- b)=- a * b

9+(-4)/5-4.2

AddNeg

a+(- b)=a-b

9-4/5-4.2

SubTerm

Subtract term