How do you express the phrase "Twelve less a number is 40" as an algebraic expression?

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How do you express the phrase "Twelve less a number is 40" as an algebraic expression?

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Answer 1 · 2015-09-11T09:14:11

$12 - n = 40$ $12-n=40$

Explanation:

Pick a variable to represent "a number" (I used $n$ $n$ )

Twelve less a number is $40$ $40$
becomes
Twelve less $n$ $n$ is $40$ $40$
$XXXXXXXX$ $color(white)("XXXXXXXX")$ replace "Twelve" with $12$ $12$
$12$ $12$ less $n$ $n$ is $40$ $40$
$XXXXXXXX$ $color(white)("XXXXXXXX")$ replace "less" with a minus sign
$12 - n$ $12 - n$ is $40$ $40$
$XXXXXXXX$ $color(white)("XXXXXXXX")$ replace "is" with an equal sign
$12 - n = 40$ $12-n=40$

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How do you express the phrase "Twelve less a number is 40" as an algebraic expression?

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