1°" (2)5+3(-6)-(2)(4)5= _-48___
10-18-40=
-58+10=48

2°" ((15)/3)+2(18)-6-3-4=_28________
5+36-13
41-13=28

3°"(-2)(-4)(-5)(-3)(1)(7)=___840_____

4°"(2)(-5)(11)(-2)(8)(-5)=__-8800______

5°"2+3-5-6+7+18-39-65=____-85_________
30-115=-85

6°"(((5)(3))/3)+2-5(8)-4(-4)=____-17___

7°"((49)/7)(-6)+2-3+4(5)(-2)=___-49________
-42+2-3+4-10
-55+6=-49