递等式计算:(1)7/8÷3/4+7/8x2/3,(2)0.45×1/6÷0.45x1/6,(3)4.8÷5/13-4又4/5x1.6
(1)7/8÷3/4+7/8x2/3
=7/8x4/3+7/8x2/3
=7/8x(4/3+2/3)
=7/8x2
=7/4
(2)0.45×1/6÷0.45x1/6
=(0.45÷0.45)x(1/6x1/6)
=1x1/36
=1/36
(3)4.8÷5/13-4又4/5x1.6
=4.8x13/5-4.8x8/5
=4.8x(13/5-8/5)
=4.8x1
=4.8
=7/8x4/3+7/8x2/3
=7/8x(4/3+2/3)
=7/8x2
=7/4
(2)0.45×1/6÷0.45x1/6
=(0.45÷0.45)x(1/6x1/6)
=1x1/36
=1/36
(3)4.8÷5/13-4又4/5x1.6
=4.8x13/5-4.8x8/5
=4.8x(13/5-8/5)
=4.8x1
=4.8
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