(+1/2)*(-2/3)*(-1/4)*(-1/3)写步骤哦~
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(+1/2)*(-2/3)*(-1/4)*(-1/3)写步骤哦~(+1/2)*(-2/3)*(-1/4)*(-1/3)写步骤哦~(+1/2)*(-2/3)*(-1/4)*(-1/3)写步骤哦~(+1/
(+1/2)*(-2/3)*(-1/4)*(-1/3)写步骤哦~
(+1/2)*(-2/3)*(-1/4)*(-1/3)写步骤哦~
(+1/2)*(-2/3)*(-1/4)*(-1/3)写步骤哦~
(+1/2)*(-2/3)*(-1/4)*(-1/3)
=(-1/3)*(-1/4)*(-1/3)
=(+1/12)*(-1/3)
=-1/36
因为负负得正,题中有三个负号所以最终答案是负数,然后分子相乘,分母相乘,在约分得-1/36
3个负号就得负``然后把那几个相乘就行了
(+1/2)*(-2/3)*(-1/4)*(-1/3)
=-[(1/2)*(2/3)*(1/4)*(1/3)
=-1/36
应该对的了``我初二了``
原来学初一还挺难``
现在看`~也不过如此
解:
(+1/2)*(-2/3)*(-1/4)*(-1/3)
=-(1/2 * 2/3 * 1/4 * 1/3)
=-(1/3 * 1/4 *1/3)
=-1/36
1()2()3()4
1 2 3 4 ()
(1) (2) (3) (4) (5)
1)2)3)4)5)
1) 2) 3) 4) 5)
(-1/2)-(-1/3)-(+1/4)
-1/2+(-1/6)-(-1/4)-2/3
0-(+2/1)-(+5/2)-(-4/3)-(+4/1)-(-5/3)
1/2+(-2/3)-(-4/5)+(-1/2)-(+1/3)
8+(-2)+(-4)+1+1+(-3)
计算(1)(2)(3)(4)题,
(1)、(2)、(3)、(4).
6.(1)、(2)、(3)、(4)
19 (1).(2).(3).(4)
(2)(3)(4)化简,(1)计算
(1)、(2)、(3)、(4)题对吗?
第六题(1)(2)(3)(4)
-1-(-2)-(+3)+(-4)-(-5)