4/3-2/7+（-6/1）-（-3/2）-1 3/4 =4分之3
=3/4-7/2-1/6+2/3-1
= -9/4+1/2-1
= -7/4-1
= -11/4
4/3-2/7+（-6/1）-（-3/2）-1
=4/3-2/7-6+3/2-1
=4/3-2/7+3/2-7
=(4*7*2-2*3*2+3*3*7)/(3*7*2)-7
=(56-12+63)/42-7
=107/42-7
=-187/42
解：
4/3-2/7+（-6/1）-（-3/2）-1
= 4/3-2/7-6+3/2-1
=56/42-12/42+63/42-7
=107/42-7
=-187/42
=3/4-2/7-6+3/2-1
=3/4-2/7-7+3/2
=(3/4+3/2)-(2/7+7)
=9/4-51/7
=141/28
4/3-2/7+（-6/1）-（-3/2）-1 =28/21-6/21-6+3/2=22/21-6+3/2=44/42-252/42+63/42=-145/42-42/42=-187/42
56/42-12/42-252/42+62/42-42/42=-187/42
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