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प्रश्न
Subtract:
−2a + b + 6d from 5a − 2b − 3c
बेरीज
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उत्तर
Change the sign of the term of the expression that is to be subtracted and then add.
Term to be subtracted = −2a + b + 6d
Changing the sign of each term of the expression gives 2a-b-6d.
On adding:
(5a − 2b -3c)+(2a-b-6d ) = 5a − 2b -3c +2a-b-6d
= (5+2)a+(− 2-1)b -3c -6d
= 7a − 3b-3c -6d
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