problemas de algebra 18-agosto-2009.

1. (2)5+3(-6)-(2)(4)5= -48
2.((15)/3)+(18)-6-3-4=41.5
3.(-2)(-4)(-5)(-3)(1)(7)=30
4.(2)(-5)(11)(-2)(8)(-5)=-8
5.2+3-5-6+7+18-39-605=76.5
6.(((5)(3))/3)+2-5(8)-4(-4)=131.5
7.((49)/7)(-6)+2-3+4(5)(-2)=153.7