Bạn tham khảo nhé!!!
a / 1/3 - 3/4 - ( -3/5 ) + 1/64 - 2/9 - 1/36 + 1/5
= ( -5/12 ) - ( -3/5 ) + 1/64 - 2/9 -1/36 + 1/5
= 11/60 + 1/64 - 2/9 - 1/36 + 1/5
= 191/960 - 2/9 - 1/36 + 1/5
= ( -67/2880 ) - 1/36 + 1/5
= ( -49/960 ) + 1/5
= 143/960
CHÚC BẠN HỌC TỐT^^^
b / ( 3 - 1/4 + 2/3 ) - ( 5 + 1/3 - 5/6 ) - ( 6 - 7/4 + 2/3)
= 41/12 - 9/2 - 59/12
= ( -13/12 ) - 59/12
= ( -6 )