
(53.7+1.2除以4分之1)除以1又5分之2 (7又12分之11-5又4分之3)/(22-2.5)
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(53.7+1.2除以4分之1)除以1又5分之2
=(53.7+1.2*4)/1.4
=(53.7+4.8)/1.4
=58.5/1.4
=585/14
(7又12分之11-5又4分之3)/(22-2.5)
= (7+12分之11-5-4分之3)/(19.5)
= (2+1/6)/(39/2)
=13/6*2/39
=1/9
=(53.7+1.2*4)/1.4
=(53.7+4.8)/1.4
=58.5/1.4
=585/14
(7又12分之11-5又4分之3)/(22-2.5)
= (7+12分之11-5-4分之3)/(19.5)
= (2+1/6)/(39/2)
=13/6*2/39
=1/9
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