7分之5十一2又5分之2)一7分之5x12分之5一3分之5除以4等于多少?要求过程

2025-03-04 21:33:04
推荐回答(2个)
回答1:

50/7 - 12/5 - 5/7 × 5/12 - 5/3 /4
= 50/7 - 12/5 - 5/7 × 5/12 - 5/12
= 50/7 - 12/5 - 12/7 × 5/12
= 50/7 - 12/5 - 5/7
= 45/7 - 12/5
= 225/35 - 84/35
= 141/35

回答2:

5/7-12/5-(5/7)*(5/12)-(5/3)*(1/4)
=5/7*(1-5/12)-12/5-5/12
=(5/7)*(7/12)-12/5-5/12
=5/12-12/5-5/12
=-12/5