(+4.7)-(-8.3)-(+7.5)+(-6)怎么算,请写出算式过程,

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(+4.7)-(-8.3)-(+7.5)+(-6)怎么算,请写出算式过程,
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(+4.7)-(-8.3)-(+7.5)+(-6)怎么算,请写出算式过程,
(+4.7)-(-8.3)-(+7.5)+(-6)怎么算,请写出算式过程,

(+4.7)-(-8.3)-(+7.5)+(-6)怎么算,请写出算式过程,
=4.7+8.3-7.5-6
=13-6-7.5
=-0.5