Question

$- 8xy \: from \: 15xy$
​

Answer 1

Answer:

15xy - 8xy = 7xy

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Answer 2

Answer:

$15xy-\left(-8xy\right)=23xy$

Step-by-step explanation:

$15xy-\left(-8xy\right)$

$\mathrm{Apply\:rule}\:-\left(-a\right)=a$

$=15xy+8xy$

$\mathrm{Add\:similar\:elements:}\:15xy+8xy=23xy$

$=23xy$

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