Iekavu atvēršana. Zīmes ienešana iekavās

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Mathematics

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7th Grade

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Hard

Dmitrijs Maļinovskis

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4 Slides • 0 Questions

Iekavu atvēršana. Zīmes ienešana iekavās

Ja pirms iekavām ir + zīme, tad, iekavas atmetot saskaitāmiem zīmes nemainās. Pirms iekavām + zīme

+ ( a + b ) = a + b
+ ( - a + b ) = - a + b
+ ( a - b ) = a - b
+ ( - a - b ) = - a - b

Ja pirms iekavām ir − zīme, iekavas atmetot, iekavās ieslēgtie saskaitāmie maina zīmes uz pretējo.

− ( a + b )= − a − b
− ( a − b ) = − a + b
− ( − a + b ) = a − b
− ( − a − b ) = a + b

Iekavu atvēršana. Zīmes ienešana iekavās

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