Question

Tính nhanh

0,375-0,3+3/11+3/12       + 1,5+1-0,75

-0,625+0,5-5/11-5/12.           2,5+5/3-1,25

 

Answer 1

A=−85​+105​−115​−125​83​−103​+113​+123​​+25​+35​−45​23​+33​−43​​A=−5(81​−101​+111​+121​)3(81​−101​+111​+121​)​+5(21​+31​−41​)3(21​+31​−41​)​A=5−3​+53​=0

Answer 2

A=−85​+105​−115​−125​83​−103​+113​+123​​+25​+35​−45​23​+33​−43​​A=−5(81​−101​+111​+121​)3(81​−101​+111​+121​)​+5(21​+31​−41​)3(21​+31​−41​)​A=5−3​+53​=0