COMBINATION OF 2 QUERIES BUT NEED TO SUM THEM : I have a question guys. I have to queries that will output 2 columns each. They're from the same table.

Query 1
SELECT MONTH(DateOrdered) AS MONTH,SUM(Downpayment)AS total FROM transaction WHERE YEAR(DateOrdered) = YEAR('2018-12-00') AND Status = 'Ongoing' GROUP BY MONTH(DateOrdered)

MONTH-----total

10------------4590

12------------1497.5

------------------------------
Query 2
SELECT MONTH(DateFinish) AS MONTH,SUM(Total-Downpayment)AS total FROM transaction WHERE YEAR(DateFinish) = YEAR('2018-12-00') AND Status = 'Complete' GROUP BY MONTH(DateFinish)

MONTH--------total

5-----------------1147.5

10----------------1647

12----------------1147.5

---------------------------------
I want to combine the two and SUM The 2 columns named total 

For Example

MONTH------------total

5--------------------1147.5

10--------------------6237

12--------------------2645


I hope someone can help. Thanks!