How do you insert parentheses to make $18+2*1+3^2 =38$ true?

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Answer 1 · 2016-02-27T22:28:02

$18+2*(1+3^2)$

$18+2*(1+3^2)=18+2*(1+9)=18+2*10=18+20=38$

The $2*1$ multiplication is suspicious, so just play with the parenthesis until the $*1$ actually has a meaning.

How do you insert parentheses to make 18+2*1+3^2 =38 18+2*1+3^2 =38 true?