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40/32 = 5/x
40 (x) = 32 (5)
40x = 160
x = 160/40
x = 4
Solución :
40/32 = 4/5
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180/450 = x/5
180 (5) = 450 (x)
900 = 450x
900/450 = x
2 = x
x = 2
Solución :
180/450 = 2/5
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12/1728 = x/144
12 (144) = 1728 (x)
1728 = 1728x
1728/1728 = x
1 = x
x = 1
Solución :
12/1728 = 1/144
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13/x = 1/13
13 (13) = x (1)
169 = x
x = 169
Solución :
13/169 = 1/13