n(n-3)+3(n+5)
x/2 +y/6=1/6
x-2y=-8
3*4+2*-7 at *=-2 is
https://tr-static.eodev.com/files/d0b/a2c0eb70bfb8ab6d154c4140593fff4d.jpg
(2000+100+8+10x)/16=135
if tantheta= x/4 then cos theta =?
3^11-1
678รท0010100101
o.2*0.5
23+67