Resolva as operações abaixo :

Obs: com o passo a passo de cada operação.

a ( - 3,4 ) + ( - 2,3 )
b ( - 16,5 ) + ( + 7,4 )
c ( - 583,54 ) - ( 358,27 )
d ( - 25 ) + ( + 0,28 ) -( - 045 ) -( + 1,3 ) e ( - 3 ) : ( + 1,5 )

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