How do you write word phrases for these expressions: $3 + a$ $3+a$ ?

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Answer 1 · 2016-08-30T08:03:28

An expression something like:
The sum of 3 and a number.

In algebra we refer to a variable as "a number"

The operation "+" can be said as any of the following:

"the sum of"
"added to"
"increased by"
"more than"

So, to express $3 + a$ $3+a$ in words, could be:

The sum of 3 and a number.
A number added to 3.
3 increased by a certain number
3 more than a number

How do you write word phrases for these expressions: 3+a3+a?