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McGraw Hill Glencoe Algebra 2, 2012 View details

1. Expressions and Formulas

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Exercise 9 Page 7

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

0.6

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.

3a-2c/4ab

SubstituteValues

Substitute values

3( - 2)-2( 4.2)/4( -2)( 3)

MultPosNeg

a(- b)=- a * b

-6-2(4.2)/-8(3)

Multiply

-6-8.4/-24

SubTerm

Subtract term

-14.4/-24