Answer: The simplified sum is
Step-by-step explanation: we have
Answer:
90
Step-by-step explanation:
That is a tenth degree equation.
The degree of an equation is the highest power it contains.
When you add integers, you keep the sign on the sum.
For example:
-9 + -9 = -18 (kept the sign)
9 + 9 = 18 (kept the "sign")
