0.75-12分之5+1又6分之5
0.75-5/12+(1+5/6)
=3/4-5/12+1+5/6
=1+(3/4+5/6-5/12)
=1+(9/12+10/12-5/12)
=1+7/6
=2+1/6
=2又6分之1
原式可化为:3/4-5/12+11/6=9/12-5/12+22/12=4/12+22/12=26/12=13/6。
本题:0.75-5/12+1又5/6
=3/4-5/12+11/6
=9/12-5/12+22/12
=26/12
=2又1/6
0.75-5/12+(1+5/6)
=9/12-5/12+(1+5/6)
=2/6+(1+5/6)
=(2+1/6)
0.75-12分之5+1又6分之5
=3/4-5/12+11/6
=9/12-5/12+22/12
=26/12=13/6
3/4-5/12+11/6=9/12-5/12+22/12=26/12=13/6,结果是2又6分之1。
0.75就是9/12 减去5/12加上 1又5/6 就是22/12 等于26/12即13/6又是2又1/6
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