(1/2a+1/3b)/(2/3a-1/4b)
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(1/2a+1/3b)/(2/3a-1/4b)
(1/2a+1/3b)/(2/3a-1/4b)
(1/2a+1/3b)/(2/3a-1/4b)
(1/2a+1/3b)/(2/3a-1/4b)
=(a/2+b/3)/(2a/3-b/4)
=(3a/6+2b/6)/(8a/12-3b/12)
=[(3a+2b)/6]/[(8a-3b)/12]
=[(3a+2b)/6]*[12/(8a-3b)]
=(6a+4b)/(8a-3b)
(1/2a+1/3b)/(2/3a-1/4b)
原式={(3a+2b)/6}/{(8a-3b)/12}
={12(3a+2b)}/{6(8a-3b)}
=(6a+4b)/(8a-3b)