6+2=8 6+3=9 6+4=10 6+5=11 6+6=12 6+7=13 6+8=14
15,32*0,5-79,6*0,05-31,8*1,723-0,398*5+167,3*0,138=7,66-3,98-54,7914-1,99+53,2014=0,1
11024:4=2756*6=16536-4500=12036
24794:7=3542:2=1771+1100=2871
18400:4=4600 49344:6=8224 8224+4600=12824
(400-2145)=1745:5=349+2000=2349
Π/4-x/2=-π/4+πn, n∈Z
-x/2=-π/2+πn, n∈Z
x=π-πn, n∈Z