# How do you insert parentheses so the statement #4+10+8-9•8= -50# is true?

##### 2 Answers

Parenthesis aren't needed if PEMDAS is followed. However, parenthesis can be added to reinforce the need to multiply first.

#### Explanation:

Looking at the original, the key part is to get the 8 to multiply against the correct number so that it all works out to be

The way the equation is written right now, we'd have 4 adding to 10 adding to 8 and then subtracting out 72... which is exactly what we want. So my first thought is that parenthesis aren't needed. Without parenthesis, we get:

If we want to throw some parenthesis in here, then we'd add them so that it reads either as

No need for parentheses

#### Explanation:

This problem can be formulated as a minimum determination.

Find

Minimum of

subjected to

The lagrangian is

The stationary points are the solutions to

or

The solutions

The last column shows the

The solution is