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]: Melanie bought a Batman game for $6.97, a strategy game for $7.90, and a Superman game for $7.73. Melanie already owns 4 games.How much did Melanie spend on video games?
[A]: 22.6


[Q]: Sara has 31 red and 15 green balloons. Sandy has 24 red balloons.How many red balloons do they have in total?
[A]: 55.0


[Q]: Eve ran 0.7 mile and walked 0.6 mile. How much farther did Eve runthan walk?
[A]:
0.1