Marlene evaluated (18 ÷ 3) + 6 – 5
Further explanation:
WE have to calculate the given expression first to compare the options
Given
[tex]18 / (3 + 6) - 5\\Solving\ round\ brackets\\=18/9-5\\Division\ has\ greater\ precedence\ so\\=2-5\\=-3[/tex]
As the result is -3, the first option "Marlene is correct." is incorrect
Second Option:Marlene evaluated (18 ÷ 3) + 6 – 5
Solving the given expression
[tex](18 / 3) + 6 - 5\\=6+6-5\\=12-5\\=7[/tex]
As this results in 7 and Marlene's answer was also 7 which means that she evaluated the expression given in second option.
Keywords: Operator precedence, Mathematical operation
Learn more about Operator Precedence at:
#LearnwithBrainly
