How do you evaluate $4( a + b - c)$ given a= 2, b= 7, and c= 4?

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Answer 1 · 2016-04-30T17:28:28

$=20$

The expression provided is :
$4 ( a + b - c)$

Data provided is:
$color(blue)(a = 2) , color(green)(b = 7) , color(purple)( c= 4$
Substituting the values for the variables in the expression.

$4 ( a + b - c) = 4 ( color(blue)( 2) + color(green)( 7) -color(purple)( 4))$

$= 4 ( 9 - 4)$

$= 4 (5)$

$=20$

How do you evaluate 4( a + b - c)4( a + b - c) given a= 2, b= 7, and c= 4?