Question

二十道有理数加减混合计算题

Answer 1

-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
-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

Answer 2

(1)(-9)-(-13)+(-20)+(-2) (2) 3+13-(-7)÷6
(3) (-2)-8-14-13 (4) (-7)×(-1) ÷7+8
(5) (-11)×4-(-18) ÷18 (6) 4+(-11)-1÷(-3)
(7) (-17)-6-16÷(-18) (8) 5÷7+(-1)-(-8)
(9) (-1)×(-1)+15+1 (10) 3-(-5)×3÷(-15)
(11) 6×(-14)-(-14)+(-13) (12) (-15)×(-13)-(-17)-(-4)
(13) (-20) ÷13÷(-7)+11 (14) 8+(-1) ÷7+(-4)
(15) (-13)-(-9)×16×(-12) (16) (-1)+4×19+(-2)
(17) (-17)×(-9)-20+(-6) (18) (-5) ÷12-(-16)×(-15)
(19) (-3)-13×(-5)×13 (20) 5+(-7)+17-10

Answer 3

15+(-25)