Question

Resolva as expressões:
a) 3 + [ 8 - 2 . ( 3 - 1 + 4 ) ] =

b) ( -2 ) . ( - 5) + ( -5) . ( +3) =

c) ( -4) . ( 50 : 10) + ( -1) =

d) ( -2) . ( +3) + 1 =

(É URGENTE, POR FAVOR)

Answer 1

Resolva as expressões: 

a) 3 + [ 8 - 2( 3 - 1 + 4)] = 3 + [ 8 - 2(6)] => 3+[8 - 12] => 3+[-4] => 3-4==> - 1 
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b) ( -2 ) . ( - 5) + ( -5) . ( +3) = + 10 +(-10) ==> +10-10==> 0
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c) ( -4) . ( 50 : 10) + ( -1) ==> ( -4)( 5) -1 ==. - 20 +1 ==> - 19
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d) ( -2) . ( +3) + 1 = ==> - 6 + 1 ==. - 5