Question

simplify -2 + 6.45z - 6 + (- 3.25z)
answer choices
3.2z + 8
8 - 3.2z
-8 + 3.2z

Answer 1

+ - next to each other just means -

You'll have \(-2 + 6.45z - 6 - 3.25z\)

You can only add or subtract numbers if they have the same variable next to it

In this case you can combine (add/subtract) \( 6.45z - 3.25z\) and \(-2 - 6\) separately