(-85)x(-25)x(-4) （9/10—1/15）x30_数学解答

(-85)x(-25)x(-4) （9/10—1/15）x30

人气：311 ℃　时间：2020-06-03 22:31:48

解答

(-85)x(-25)x(-4)
=-25x4x85
=100x85
=-8500
（9/10—1/15）x30
=9/10x30-1/15x30
=27-2
=25