有理数的加减法1.(-7/2)+(+6/7)+(0.5)+(+8/7) 2.4.5+(-2.5)+28/3+(-47/3
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有理数的加减法1.(-7/2)+(+6/7)+(0.5)+(+8/7) 2.4.5+(-2.5)+28/3+(-47/3)+7/3
还有,3.(-5.5)-(-3.2)-(-2.5)-(-4.8) 4.(-4)+8/3+(-1/2)+(-8/3) 5.7/2+(-5/6)-(-1/3)-(+0.8)
还有,3.(-5.5)-(-3.2)-(-2.5)-(-4.8) 4.(-4)+8/3+(-1/2)+(-8/3) 5.7/2+(-5/6)-(-1/3)-(+0.8)
![有理数的加减法1.(-7/2)+(+6/7)+(0.5)+(+8/7) 2.4.5+(-2.5)+28/3+(-47/3](/uploads/image/z/8064511-7-1.jpg?t=%E6%9C%89%E7%90%86%E6%95%B0%E7%9A%84%E5%8A%A0%E5%87%8F%E6%B3%951.%28-7%2F2%29%2B%28%2B6%2F7%29%2B%280.5%29%2B%28%2B8%2F7%29+2.4.5%2B%28-2.5%29%2B28%2F3%2B%28-47%2F3)
1.(-7/2)+(+6/7)+(0.5)+(+8/7)
=-7/2+1/2+6/7+8/7
=-6/2+14/7
=-3+2
=-1
2.4.5+(-2.5)+28/3+(-47/3)+7/3
=2+(28-47+7)/3
=2+(-12)/3
=2-4
=-2
=-7/2+1/2+6/7+8/7
=-6/2+14/7
=-3+2
=-1
2.4.5+(-2.5)+28/3+(-47/3)+7/3
=2+(28-47+7)/3
=2+(-12)/3
=2-4
=-2
有理数的加减法1.(-7/2)+(+6/7)+(0.5)+(+8/7) 2.4.5+(-2.5)+28/3+(-47/3
有理数的加减法.初中有理数加减法:3/4-2/7+(-1/6)-(-2/3)-1.不能直接就等.
1-2+3-4+5-6+7-8+•••+4999-5000=?按初一有理数的加减法方
有理数的加减法.1-4+3-0.5,-2.4+3.5-4.6+3.5,(-7)-(+5)+(-4)-(-10),
有理数的加减法.-4.2+5.7-8.4+10,-1/4+5/6+2/3-1/2,12-(-18)+(-7)-15,4.
初中,有理数的加减法.(-7)-9-(-3)+(-5),-4.2+5.7-8.4+10,(-1.3)-(-3.2), -
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初中有理数加减法:3/4-2/7+(-1/6)-(-2/3)-1
1+【-2分之一】+3分之一+【-6分之一】有理数的加减法