Question

[(-5)+7+(-3)]×(9-11+4)=
b)[-25-(-20)+(-10)]:[18-(+19)-4]=
c)(-27+30)×[(-28+17+11)×(-995+2011)-(-90+64-10)÷(-25+21)] =
d)(-31+23)×[(-74+18)÷7-(-49+54)×(-37+29)]=
e)(-39+27)×[(-18+54-4)÷(-31+23)+(-6)×(-8)-(-81)÷(-9)]÷(-70)=
f)(-25+28)×[(-64+24)÷(-21+13)-(-33+25)×(-37+29+6)]÷(-15+4)=

Answer 1

a ) [ ( -5 ) + 7 + ( -3 ) ] x ( 9 - 11 + 4 ) =

= [ -5 + 7 - 3 ] x 2

= -1 x 2

= -2

b ) [ -25 - ( -20 ) + ( -10 ) ] : [ 18 - ( +19 ) - 4 ] =

= [ -25 + 20 - 10 ] : ( -5 )

= -15 : ( -5 )

= 3

c ) ( -27 + 30 ) x [ ( -28 + 17 + 11 ) x ( -995 + 2011 ) - ( -90 + 64 - 10 ) : ( -25 + 21 ) ] =

= 3 x [ 0 x ( -995 + 2011 ) - ( -36 ) : ( -4 ) ]

= 3 x [ 0 + 36 : ( -4 ) ]

= 3 x ( -9 )

= -27

d ) ( -31 + 23 ) x [ ( -74 + 18 ) : 7 - ( -49 + 54 ) x ( -37 + 29 ) ] =

= -8 x [ -56 : 7 - 5 x ( -8 ) ]

= -8 x [ -8 + 40 ]

= -8 x 32

= -256

e ) ( -39 + 27 ) x [ ( -18 + 54 - 4 ) : ( -31 + 23 ) + ( -6 ) x ( -8 ) - ( -81 ) : ( -9 ) ] : ( -70 ) =

= -12 x [ 32 : ( -8 ) + 48 + 81 : ( -9 ) ] : ( -70 )

= -12 x [ -4 + 48 - 9 ] : ( -70 )

= -12 x 35 : ( -70 )

= 6

f ) ( -25 + 28 ) x [ ( -64 + 24 ) : ( -21 + 13 ) - ( -33 + 25 ) x ( -37 + 29 + 6 ) ] : ( -15 + 4 ) =

= 3 x [ -40 : ( -8 ) - ( -8 ) x ( -2 ) ] : ( -11 )

= 3 x [ 5 + 8 x ( -2 ) ] : ( -11 )

= 3 x [ 5 - 16 ] : ( - 11 )

= 3 x ( -11 ) : ( -11 )

= 3 x 1

= 3