解:依题意得算式,
7又2分之1-3又3分之1-(-6分之5)
=7+2分之1-3-3分之1+6分之5
=7-3+(2分之1-3分之1+6分之5)
=4+(6分之3-6分之2+6分之5)
=4+1
=5
即7又2分之1-3又3分之1-(-6分之5)=5
7又1/2-3又1/3-(-5/6)
=4又1/6+5/6
=5
15/2-1/3-(-5/6)
=45/6-2/6+5/6
=48/6
=8
解:7又1/2-3又1/3-(-5/6)等于( 5 )
∵已知需求出7又1/2-3又1/3-(-5/6)等于多少
∴7又1/2 - 3又1/3 - (-5/6)
= (7×2+1)/2 - (3×3+1)/3 + 5/6
= 15/2 - 10/3 + 5/6
= 45/6 - 20/6 + 5/6
= 25/6 + 5/6
= 30/6
= 5
答:7又1/2-3又1/3-(-5/6)等于5
答案为5
7(1/2)-3(1/3)-(-5/6)
=7+1/2-3-1/3+5/6
=4+3/6-2/6+5/6
=4+1
=5