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OpenStudy (anonymous):
Add: 21.4 + (- 23.9)
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Vocaloid (vocaloid):
hint: 21.4 + (- 23.9) = 21.4 - 23.9 = ?
Vocaloid (vocaloid):
(when you have something like A + (-B), it's the same as A - B)
OpenStudy (anonymous):
-2.5
Vocaloid (vocaloid):
great ~
OpenStudy (anonymous):
thank you
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