Bài 10:
Ta có: \(E=172,56-35,72-72,56+4,37-\left(5,37-5,32\right)\)
\(=\left(172.56-72.56\right)-\left(35.72-5,32\right)+\left(4,37-5,37\right)\)
\(=100-30.4-1=58.6\)
Bài 11:
Ta có: \(B=123,8-34,15-12,49-\left(5,85-2,49\right)+10\)
\(=123,8-34,15-5,85-12,49+2,49+10\)
\(=123,8-40=83,8\)

4 và 5