Case Study

Finding the Order of Operations Mistake in 12−3(9−12)12 - 3(9 - 12)

A worked simplification of 12−3(9−12)12 - 3(9 - 12) makes its mistake in the very first step. Identify which order-of-operations priority was ignored and give the correct value of that first step.

0

1

Updated 2026-09-17

Contributors are:

Who are from:

Tags

OpenStax

Elementary Algebra @ OpenStax

Ch.1 Foundations - Elementary Algebra @ OpenStax

Algebra

Math

Prealgebra

Recall in Bloom's Taxonomy

Related