Calcule a) ( + 5 +3 -2) - ( 10+3-15) b) ( 12+ ( -3) -4) + ( -3+7-2).... Pergunta de ideia deRayssaBrito

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December 2019 2 19 Report

Calcule

a) ( + 5 +3 -2) - ( 10+3-15)
b) ( 12+ ( -3) -4) + ( -3+7-2)

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Lista de comentários

luizkinho88 a) ( + 5 +3 -2) - ( 10+3-15)
(+8-2) - (13-15)
+6 - (-2)
+6 +2
+8
b) ( 12+ ( -3) -4) + ( -3+7-2)
(12 -3 -4 ) + (+4-2)
(9-4) + (+2)
5 +2
7

1 votes Thanks 1

maycksabbadin a) ( + 5 +3 -2) - ( 10+3-15)
b) ( 12+ ( -3) -4) + ( -3+7-2)

Primeiro resolve oq ta em parenteses
a) (5 +3-2) - (10+3-15)
(6) - (-2) "- com - da +, regra de sinais"
6+2 = 8

b) ( 12+ ( -3) -4) + ( -3+7-2)
( 12 - 3 - 4) + (-3 +7 -2)
5 + 2 = 7

0 votes Thanks 1