1.3-2.7+3.2+1.4-0.2
2.4-1.03+2.3+3.30+3.3
-8.9-4.6+3.5+8.4+1.1
5.8-2.6-2.17+1.8+4.17
-15.3-5.6+2.2-5.6+3.1