Question

[(-2)×10-(-4)×5]×3-14÷(-2)

Answer 1

[(-2)×10-(-4)×5]×3-14÷(-2) =[(-20)-(-20)]x3-14÷(-2)=[(-20)-20]=x3-14÷(-2)=0x3-7=0-7=7

Answer 2

[(-2)×10-(-4)×5]×3-14÷(-2)=
[-20-(-20)]×3+7=
[-20+20]×3+7=
0×3+7=
0+7=
7

Answer 3

[(-2)×10-(-4)×5]×3-14÷(-2)=
= [-20+20]×3- [14×(-¹/₂)]=
= 0-(-7)= 7