# How do you simplify #x + 9x + 3#?

##### 2 Answers

Oct 28, 2015

#### Explanation:

Note that

#x+9x+3= (1+9)x+3#

#=10x+3#

Oct 28, 2015

It is important that you look at the explanation!

#### Explanation:

The expression has two groups of numbers. They are: one constant and a set of counts of

We can not mix the constant with the count of x as they are different; in that we do not know the value of

Looking at the

Adding means 'put with the count'. The opposite of this is subtract; which means 'remove from the count'.

We have one of

Putting everything together gives: