Add the two expressions

3z - 4 + 2z + 5

In order for us to add the two expressions above, what we are going to do first is to group the same terms, and add them using the normal process of addition. So here it goes.
      3z - 4
+    2z + 5

      5z + 1
So the answer for this would be 5z + 1. Hope this answers your question.

How much is 32 out of 40 written as a percentage? convert fraction (ratio) 32 / 40 answer:   80%