Resolva
a) ( -10 + ( -3) + 4) - ( - 7 + ( - 3) -(+10) )
b){ - 4[ ( 8 + ( -3) + ( +7)] + [ - 5 ( 4 +( - 3)]
c) { - 10 -[ 2 (10 + (+3) - 7) + ( 10 + ( -5) - (+7)]}
a) ( -10 + ( -3) + 4) - ( - 7 + ( - 3) -(+10) )
b){ - 4[ ( 8 + ( -3) + ( +7)] + [ - 5 ( 4 +( - 3)]
c) { - 10 -[ 2 (10 + (+3) - 7) + ( 10 + ( -5) - (+7)]}
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a) ( -10 + ( -3) + 4) - ( - 7 + ( - 3) -(+10) )
( -10 - 3 + 4) - ( - 7 - 3 - 10 )
(-13 + 4) - (- 20)
- 9 + 20 = + 11
b){ - 4[ ( 8 + ( -3) + ( +7)] + [ - 5 ( 4 +( - 3)]
{ - 4[ ( 8 - 3 + 7 )] + [ - 5( 4 - 3)]}
{ - 4[ ( 8 + 4) ] + [ - 5(1)]}
{ - 4[ 12 ] + [ - 5]}
{ - 4[12] - 5 }
{ - 48 - 5} =
- 48 - 5 = - 53
c) { - 10 -[ 2 (10 + (+3) - 7) + ( 10 + ( -5) - (+7)]}
{ - 10 -[ 2( 10 + 3 - 7 ) + ( 10 - 5 - 7)]}
{ - 10 - [ 2 (13 - 7) + (10 - 12)]}
{ - 10 - [ 2(6) + (-2)]}
{ - 10 - [ 12 - 2]}
{ - 10 - [ 10]}
{ - 10 - 10}
- 10 - 10 = - 20