Question

What is 12 decreased by a number?

Answer 1

The expression is $x - 12$

GIVEN:- 12 decreased by a number

TO FIND:- Expression of the given algebraic phrase.

SOLUTION:-

• In mathematics, an expression or mathematical expression is a finite combination of symbols that is formed perfectly according to rules that depend on the context of the algebraic phrase.

According to the question, 12 is decreased by a number

Let the number be x

Decreased implies subtraction, in other words, the number (x) is subtracted by 12. which means x minus 12

$x - 12$

Hence, the expression is $x - 12$

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