Question

pls, ajutor!!!
Va rog!!!!
Ma asculta mâine
5.a) -2×[-4+3×(-29+3+28)-2×(+14-15+2)]=
b)+5×[+8-3×(-6+38-34)+2×(-25+26-3)]=
c)-7×[-2+5×(+18-13-6)-4×(-17+1+14)]=
​

Answer 1

Răspuns:

a) -2×[-4+3×(-26+28)-2×(-1+2)] =

-2×(-4+3×2-2×1) =

-2×(-4+6-2) =

-2×(2-2) =

-2×0= 0

b) +5×[+8-3×( +32-34)+2×(1-3)] =

+5×(+8-3×(-2)+2×(-2) =

+5×(+8+6-4) =

+5×(14-4)=

+5×10= 50

c) -7×[-2+5×(+5-6)-4×(-16+14)=

-7×(-2+5×(-1)-4×(-2)=

-7×(-2-5+8)=

-7×(-7+8)=

-7×(+1)= -7