算有理数算式48÷[(-2)^3-(-4)] (-1)^3×(-5)÷[(-3)^2+2×(-5)] (-2/9)+(-7/9)-(-2) 4.6-(-3/4+1.6-4)-3/4 (1/2-3+5/6-7/12)÷(-1/36) [3/4+(-1/2)-(-7/8)]÷(-7/8
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![算有理数算式48÷[(-2)^3-(-4)] (-1)^3×(-5)÷[(-3)^2+2×(-5)] (-2/9)+(-7/9)-(-2) 4.6-(-3/4+1.6-4)-3/4 (1/2-3+5/6-7/12)÷(-1/36) [3/4+(-1/2)-(-7/8)]÷(-7/8](/uploads/image/z/2014856-8-6.jpg?t=%E7%AE%97%E6%9C%89%E7%90%86%E6%95%B0%E7%AE%97%E5%BC%8F48%C3%B7%5B%28-2%29%5E3-%28-4%29%5D+%28-1%29%5E3%C3%97%28-5%29%C3%B7%5B%28-3%29%5E2%2B2%C3%97%28-5%29%5D+%28-2%2F9%29%2B%28-7%2F9%29-%28-2%29+4.6-%28-3%2F4%2B1.6-4%29-3%2F4+%281%2F2-3%2B5%2F6-7%2F12%29%C3%B7%28-1%2F36%29+%5B3%2F4%2B%28-1%2F2%29-%28-7%2F8%29%5D%C3%B7%28-7%2F8)
算有理数算式48÷[(-2)^3-(-4)] (-1)^3×(-5)÷[(-3)^2+2×(-5)] (-2/9)+(-7/9)-(-2) 4.6-(-3/4+1.6-4)-3/4 (1/2-3+5/6-7/12)÷(-1/36) [3/4+(-1/2)-(-7/8)]÷(-7/8
算有理数算式
48÷[(-2)^3-(-4)]
(-1)^3×(-5)÷[(-3)^2+2×(-5)]
(-2/9)+(-7/9)-(-2)
4.6-(-3/4+1.6-4)-3/4
(1/2-3+5/6-7/12)÷(-1/36)
[3/4+(-1/2)-(-7/8)]÷(-7/8
算有理数算式48÷[(-2)^3-(-4)] (-1)^3×(-5)÷[(-3)^2+2×(-5)] (-2/9)+(-7/9)-(-2) 4.6-(-3/4+1.6-4)-3/4 (1/2-3+5/6-7/12)÷(-1/36) [3/4+(-1/2)-(-7/8)]÷(-7/8
48÷[(-2)^3-(-4)]
=48/(-8+4)
=48/(-4)
=-12
(-1)^3×(-5)÷[(-3)^2+2×(-5)]
=1*5/(9-10)
=5/(-1)
=-5
(-2/9)+(-7/9)-(-2)
=-2/9-7/9+2
=-1+2
=1
4.6-(-3/4+1.6-4)-3/4
=4.6+3/4-1.6+4-3/4
=3+4
=7
(1/2-3+5/6-7/12)÷(-1/36)
=(3/4-3)*(-36)
=(-9/4)*(-36)
=81
[3/4+(-1/2)-(-7/8)]÷(-7/8)
=(1/4+7/8)*(-8/7)
=-1/4*8/7-7/8*8/7
=-2/7-1
=-9/7