What must be subtracted from - 7to obtain - 15
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Let the no= x
(-7) -x=(-15)
-x= (-15)+7
-x=-8
x=8
8 must be subtracted from -7 to get -15
(-7) -x=(-15)
-x= (-15)+7
-x=-8
x=8
8 must be subtracted from -7 to get -15
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