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Ta bort parentes & byt tecken

Om man tar bort en parentes med ett minustecken framför måste man byta tecken på alla termer innanför parentesen, t.ex.
5−(2−3)=5−2+3.
Om parentesen multipliceras med något eller har en exponent måste man beräkna detta först innan subtraktionen kan utföras pga. prioriteringsreglerna.

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