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OpenStudy (anonymous):
***WILL MEDAL*** Solve.
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OpenStudy (anonymous):
Vocaloid (vocaloid):
start by adding d to both sides
OpenStudy (anonymous):
4<4d?
Vocaloid (vocaloid):
not quite 4 + d + d = ?
OpenStudy (anonymous):
4d
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Vocaloid (vocaloid):
nope d + d = ?
OpenStudy (anonymous):
dd?
Vocaloid (vocaloid):
hint: 1 + 1 = 2 d + d = ?
OpenStudy (anonymous):
2d?
OpenStudy (anonymous):
yeah finally...
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Vocaloid (vocaloid):
good! that gives us 4 < 2d + 4 now subtract 4 from each side
OpenStudy (anonymous):
Is it 0<2d?
Vocaloid (vocaloid):
good, now divide both sides by 2
OpenStudy (anonymous):
0<4d?
Vocaloid (vocaloid):
divide
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Vocaloid (vocaloid):
2d/2 = ?
OpenStudy (anonymous):
Oh sorry misread that 0<1d
Vocaloid (vocaloid):
good, now we flip that around to get d > 0
OpenStudy (anonymous):
Thx so much! c:
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