初一数学有理数计算题.求解答.过程要写清.(-2)-(+2/3) (-16又3/4)-(-10又1/4)-(+1又1/2)-4.2+5.7-8.4+10-1/4+5/6+2/3-1/212-(-18)+(-7)-154.7-(-8.9)-7.5+(-6)(-4又7/8)-(-5又1/2)+(-4又1/4)-(+3又1/8)(-2/
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初一数学有理数计算题.求解答.过程要写清.(-2)-(+2/3) (-16又3/4)-(-10又1/4)-(+1又1/2)-4.2+5.7-8.4+10-1/4+5/6+2/3-1/212-(-18)+(-7)-154.7-(-8.9)-7.5+(-6)(-4又7/8)-(-5又1/2)+(-4又1/4)-(+3又1/8)(-2/
初一数学有理数计算题.求解答.过程要写清.
(-2)-(+2/3)
(-16又3/4)-(-10又1/4)-(+1又1/2)
-4.2+5.7-8.4+10
-1/4+5/6+2/3-1/2
12-(-18)+(-7)-15
4.7-(-8.9)-7.5+(-6)
(-4又7/8)-(-5又1/2)+(-4又1/4)-(+3又1/8)
(-2/3)+|0-5又1/6|+|-4又5/6|+(-9又1/3)
初一数学有理数计算题.求解答.过程要写清.(-2)-(+2/3) (-16又3/4)-(-10又1/4)-(+1又1/2)-4.2+5.7-8.4+10-1/4+5/6+2/3-1/212-(-18)+(-7)-154.7-(-8.9)-7.5+(-6)(-4又7/8)-(-5又1/2)+(-4又1/4)-(+3又1/8)(-2/
(-2)-(+2/3)
=-2-2/3
=-2又2/3
(-16又3/4)-(-10又1/4)-(+1又1/2)
=-16又3/4+10又1/4-1又1/2
=-6又1/2-1又1/2
=-8
-4.2+5.7-8.4+10
=1.5-8.4+10
=-6.9+10
=3.1
-1/4+5/6+2/3-1/2
=-3/12+10/12+8/12-6/12
=7/12+8/12-6/12
=15/12-6/12
=9/12
=3/4
12-(-18)+(-7)-15
=12+18-7-15
=-8
4.7-(-8.9)-7.5+(-6)
=4.7+8.9-7.5-6
=13.6-7.5-6
=0.1
(-4又7/8)-(-5又1/2)+(-4又1/4)-(+3又1/8)
=-4又7/8+5又1/2-4又1/4-3又1/8
=-8+1又1/2
=-6又1/2
(-2/3)+|0-5又1/6|+|-4又5/6|+(-9又1/3)
=-2/3+(5又1/6+4又5/6)-9又1/3
=-2/3+10-9又1/3
=9又1/3-9又1/3
=0