Simplify 18 divided by 6, plus 4 times the quantity (5 minus 2).
A36
B15
C23
D21
Answer & Solution
Correct answer: B. 15
1. Inside the parentheses, 5 minus 2 equals 3.
2. Multiply next: 4 times 3 equals 12.
3. Divide: 18 divided by 6 equals 3.
4. Only addition is left, so add: 3 plus 12 equals 15.
5. Adding the 3 and the 4 before multiplying by 3 gives the wrong value of 21, because it multiplies before finishing the operations that come first.
_Source: OpenStax Prealgebra (CC BY 4.0), Ch 2 "The Language of Algebra", section 2.1 Use the Language of Algebra_
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