Question

a) -5 x [3 x (-5) - 2 x (-7) +9 x (-3) ] = ? ala care este x este inmultit

b) [ ( - 30 ) : ( + 10 ) - ( - 8 ) x ( + 5 ) ] : ( - 37 ) = ?

c) ( - 50 ) x [ { 1 + 42 x ( 3 - 45 ) } x 2 + 2 = ?
urgent va rog mult mult de tot ofer 99 puncte !!! + coronitaa !!!!!!!
:* :* :*

Answer 1

a)(-5)×[3×(-5)-2×(-7)+9×(-3)]=
(-5)×(-15+14-27)=
(-5)×(-28)=140
b)[(-30)÷(+10)-(-8)×(+5)]÷(-37)=
[(-3)-(-40)]÷(-37)=
(-3+40)÷(-37)=
(-37)÷(-37)=1
c)(-50)×[1+42×(3-45)]×2+2=
(-50)×[1+42×(-42)]×2+2=
(-50)×(1-1764)×2+2=
(-50)×(-1765)×2+2=
88200×2+2=
176400+2=176402