脱式计算:(2/3+6/11×11/18)÷11/32 77×29/78 63×(16/7-10/9)÷1/10 8/49÷[9/8-(1/8+3/7)]
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(2/3+6/11×11/18)÷11/32
=(2/3+6/18)×32/11
=2/3+1/3)×32/11
=32/11
77×29/78
=(78-1)×29/78
=29-29/78
=28又78分之79
63×(16/7-10/9)÷1/10
=(16×9-10×7)×10
=74×10
=740
8/49÷[9/8-(1/8+3/7)]
=8/49÷(9/8-1/8-3/7)
=8/49÷(1-3/7)
=8/49÷4/7
=8/49×7/4
=2/7
=(2/3+6/18)×32/11
=2/3+1/3)×32/11
=32/11
77×29/78
=(78-1)×29/78
=29-29/78
=28又78分之79
63×(16/7-10/9)÷1/10
=(16×9-10×7)×10
=74×10
=740
8/49÷[9/8-(1/8+3/7)]
=8/49÷(9/8-1/8-3/7)
=8/49÷(1-3/7)
=8/49÷4/7
=8/49×7/4
=2/7
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