(1000-195)(3.4+0.8) 脱式计算有过程
解,得:
==(1000-195)/(21/5)
==(1000-195)*(5/21)
==1000*(5/21)-195*(5/21)
==5000/21-975/21
==(5000-975)/21
==4025/21
==575/3
(1000-195)(3.4+0.8) 脱式计算有过程
解,得:
==(1000-195)/(21/5)
==(1000-195)*(5/21)
==1000*(5/21)-195*(5/21)
==5000/21-975/21
==(5000-975)/21
==4025/21
==575/3