## Algebra 1

$23-8*2+9$ is not equal to $15*2+9$ $23-8*2+9=16$
Order of operations means that 8 must be multiplied by 2 first. The student solved the expression left to right, ignoring order rules, leading to the mistake. $23-8*2+9=23-16+9$ $23-16+9=7+9$ $7+9=16$