no 1 dan 2 dong ikut jhalan nya yaaa

1 ) 3 1/2: 1 3/4 - 4 1/8 = 7/2:7/4-33/8 = 7/2x4/7-33/8 = 28/14-33/8 = 2-33/8 = 16/8-33/8 = -17/8 = -2 1/8

untuk no 2 ctt = 1/x^n = x^-n, 1/x^-n = x^n

2) (1/64)^-2/3= (1/2^6)^-2/3= (2^-6)^-2/3 = 2^(-6)(-2/3) = 2^12/3= 2^4

no 1.)3 1/2 : 1 3/4 -4 1/8 = 7/2:7/4 -33/8
= 7/2 kali 4/7 =28/14 -33/8
=2 33/8
=16/8-33/8
=17/8
= -2 1/8
maaf ya kalo salah
tapi nomor 2 nya aku gk.tau Udh lupa
maaf yyyy