50*56分之55+6/55分之56

问题描述:

50*56分之55+6/55分之56

50*56分之55+6/55分之56=50*56分之55+6*56分之55=56*56分之55=55

50*56分之55+6/55分之56
=50*56分之55+6*56分之55
=55/56*(50+6)
=55

50*55/56+6/(56/55)
=50*55/56+6*(55/56)
=(50+6)*55/56
=56*55/56
=55