do sumy liczb 14 i 18 dodaj różnice liczb 20 i 7.
14 + 18 = 32 32+ ( 20 - 7 ) = 32 + 13 = 45
(14+18)+(20-7)=32+13=45
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14 + 18 = 32 32+ ( 20 - 7 ) = 32 + 13 = 45
(14+18)+(20-7)=32+13=45