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Mathematics
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25 February, 18:01
8/f = 56/105 what is f?
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Emmy Dickerson
25 February, 18:49
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8/15 = 56/105
This may be solved using proportion.
a/b = c/d
ad = bc where cross products are equal.
a = 8
b = f
c = 56
d = 105
ad = bc
8*105 = f*56
840 = 56f
840/56 = 56f/56
f = 15
56 : 7 = 8
105 : 7 = 15
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