tolong di jawab ya....... jasa cit ca all server

a.3/8-1/4=15/40-10/40=5/40÷5=1/8
b.7/30+3/20-4 1/4=4(14/60+9/60-15/60)=4 8/60÷4=4 2/30
c.7 1/3-6 7/8=22/3-55/8=176/24-165/24=11/24
d.9/4+11/18+5/27-4 2/3=4(243/108+66/108+20/108-72/108)=4(329/ 108-72/108)=4 257/108=6 41/108
maaf jika salah y makasih