Question

What must be substracted from -7 to obtain -15? *​

Answer 1

Answer:

=8

Step-by-step explanation:

What must be substracted from -7 to obtain -15?

= (-7) - (-15)

=(-7) +15

=8

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Answer 2

QUESTION :

• What must be substracted from (-7) to obtain (-15) ?

ANSWER :

Let n be the number which when substracted from (-7) will result as (-15).

$\bf = > (- 7) - n = ( - 15) \\ \bf = > - 7 + 15 = n \\ \bf = > \: \: \: \: \: \: \: n = 15 - 7 \: \: = \red8$

Hence,

• 8 is that unknown required nunber which must be substracted from (-7) to obtain (-15).

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