初一有理數加減運算計算題 難一點網友廻答：
- -|98| 76 (-87)]*23[56 (-75)-(7)]-(8 4 3)
5 21*8/2-6-59
68/21-8-11*8 61
-2/9-7/9-56
4.6-(-3/4 1.6-4-3/4)
1/2 3 5/6-7/12
[2/3-4-1/4*(-0.4)]/1/3 2
22 (-4) (-2) 4*3
-2*8-8*1/2 8/1/8
(2/3 1/2)/(-1/12)*(-12)
(-28)/(-6 4) (-1)
2/(-2) 0/7-(-8)*(-2)
(1/4-5/6 1/3 2/3)/1/2
18-6/(-3)*(-2)
(5 3/8*8/30/(-2)-3
(-84)/2*(-3)/(-6)
1/2*(-4/15)/2/3
-3x 2y-5x-7y
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