括號4/5,減8/15,乘1/2括號,除以3/5.這一題用脫式計算怎麼做.這題要用簡便方法來做一題

(4/5-8/15×1/2)÷3/5
=(4/5-4/15)÷3/5
=8/15÷3/5
=8/9

（4/5-8/15）×1/2÷3/5
=4/15×1/2÷3/5
=2/15÷3/5
=2/9

1/4+(-2/3)+5/6+(-1/4)+(-1/3)
-----------
1/4和(-1/4)一組，=0
(-2/3)和(-1/3)一組，=-1
那麼就是-1+5=6=-1/6

括號-85/17加31又3/4加括號-4又1/16
=--5+31+3/4-4-1/16
=（-5+31-4）+（3/4-1/16）
=22+11/16
=22又16分之11.

8-括號4/5-2/3括號用簡便分數
=8-(12/15-10/15)
=8-2/15
=7又13/15

你好！
14÷（3/4×21/5）
=14×4/3×5/21
=40/9
如果對你有幫助望點右上角的採納按鈕

括號156-4/13-21括號乘8/11簡便計算
（156-4/13-21）*8/11
=(135-4/13)*8/11
=
直接計算
計算量較大，建議核查原算式

解：
12÷(3/4÷(1/5))
=12÷(3/4×5)
=12÷15/4
=12×4/15
=16/5
=3又1/5

解: (0.5+5/8×1.3+37.5%×1又3/10)÷4/5

=(1/2+5/8*13/10+3/8*13/10)*5/4

=[1/2+13/10(5/8+3/8)]*5/4

=18/10* 5/4

=9/4

計算計算
1/4x8/3÷8/5÷4
=1/4x8/3x5/8x1/4
=5/48