Question

Tính giá trị biểu thức sau

a, 2/3+1/3.(-4/9+5/6):7/12

Answer 1

=2/3+1/3 x7/18:7/12=2/3 +7/54:7/12=2/3+2/9=8/9

Answer 2

a,\(\frac{5}{6}:\frac{-7}{12}\)   b, \(\frac{-21}{24}:\frac{-14}{8}\)

d,\(\frac{4}{5}:\frac{-8}{15}\)e,\(\frac{3}{5}+\frac{-7}{4}\)

g,\(\frac{5}{12}-\frac{-7}{12}\)h,\(\frac{-15}{16}.\frac{8}{-25}\)

Answer 3

a= -10/7. b=1/2.d=-3/2.e=-23/20g=1.h=3/10