You are provided with an arithmetic question. Your task is to compute the solution using the given arithmetic operations. The only arithmetic operators needed to answer the questions are'+'(addition) and'-'(subtraction). The answer should be correct to one decimal place.

[Q]: There were 2 red orchids and 4 white orchids in the vase. Jessica cutsome red orchids from her flower garden. There are now 18 redorchids in the vase. How many red orchids did she cut?
[A]: 16.0


[Q]: Sandy grew 8 carrots and 7 turnips. Mary grew 6 carrots. How manycarrots did they grow in all?
[A]: 14.0


[Q]: Joan has 9 blue balloons but lost 2 of them. How many blue balloonsdoes Joan have now?
[A]:
7.0