Josue H. answered 01/24/18
Tutor
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Physics, Calc AB/BC, SAT Math, ACT Math, IB Math, Alg I/II, Trig
Absolute value works as follows
l-xl = x
lxl = x
Therefore, the absolute value of -7 + 15 is,
l -7 +15 l =
l 8 l = 8
I hope this helped!