g) [tex] \frac{5}{18} + \frac{14}{9} : \frac{7}{3} + \frac{1}{2} :9=[/tex]
[tex] =\frac{5}{18} + \frac{14}{9} * \frac{3}{7} + \frac{1}{2}*\frac{1}{9}=[/tex]
[tex] =\frac{5}{18} + \frac{2}{3} + \frac{1}{18}=[/tex]
[tex] =\frac{5}{18} + \frac{12}{18} + \frac{1}{18}=[/tex]
[tex] =\frac{5+12+1}{18} =[/tex]
[tex] =\frac{18}{18} =[/tex]
=1
h)[tex] \frac{x}{x+1} + \frac{x}{x^{2} +x}= [/tex]
[tex]= \frac{x}{x+1} + \frac{x}{x(x+1)}= [/tex]
[tex]= \frac{x}{x+1} + \frac{1}{x+1}= [/tex]
[tex]= \frac{x+1}{x+1} = [/tex]
=1
i) [tex] \frac{1}{2a+1} * \frac{4a+2}{3} =[/tex]
[tex]= \frac{1}{2a+1} * \frac{2(2a+1)}{3} =[/tex]
[tex]= \frac{2}{3} [/tex]
