Question

Pomożecie z matmą proszę

Answer 1

A) = 3-(+9)-(-27)-(+81)=3-9+27-81= -60
b) = (-64) - 64 - ((+625)-625)= -128 -0 = -128
c)  = 3*(7-(-8)) - (1-(2-4))= 3*(7+8) - (1-(-2)) = 3*15 - (1-(-2))=45-(1+2)=45-3=42
d) = 3 - {9- [18-(-8)*9]} = 3- {9-[18+72]}=3-{9-90} = 3-(-81) = 3+81=84