Bài 1: Tính
a, 5/6 + 3/5=40/30
b, 11/16 - 5/8=1/16
c, 5/9 x 6/7=30/63
d, 5/4 : 3/4=5/3
giúp me
\(\frac{5}{6}+\frac{3}{5}=\frac{43}{30}\)
\(\frac{11}{16}-\frac{5}{8}=\frac{1}{16}\)
\(\frac{5}{9}\times\frac{6}{7}=\frac{30}{63}\)
\(\frac{5}{4}\div\frac{3}{4}=\frac{20}{12}\)