How do you simplify x + 9x + 3?

2 Answers
Oct 28, 2015

=10x+3

Explanation:

Note that

x+9x+3= (1+9)x+3
=10x+3

Oct 28, 2015

10x+3
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 x

We can not mix the constant with the count of x as they are different; in that we do not know the value of x. However, we do know the value of 3. So the constant stays as it is and on its own.

Looking at the" "x parts:

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

We have one of x put with another nine of x giving us a total of 10 of x written as 10x.

Putting everything together gives:

10x+3