A rhombus area is height times base because has 2 parralell sides and the area of a paralellogram is found by multiplying height by base (aka width)
even though this might not seem wrong, it is correct
so area=height times base
see attachment below
A subtraction problem can be turned in to an addition problem because of negative numbers. Take 5-2=3 for example. If you change 5-2 into an addition problem then you would but he addition sign and a negative sign on 2. This will then leave you with the problem looking like 5+ -2. If you add 5 and -2 you will still get three.
Step-by-step explanation:

Answer:
-3(9a + 4)
Step-by-step explanation:
Factor −3 out of −27a−12.... basically divide each term by -3
-3(9a + 4)... please check if by multiplying -3 you still get (-27a - 12)