Question

( begin{aligned}{frac{7}{9}+frac{10}{13}=frac{10}{13}+frac{7}{9}}{frac{115 cdot}{115}=frac{91+90}{117}=frac{182}{117}} frac{90+91}{117}=frac{181}{117} 1+15=& R+15 text { Heree prosed } end{aligned} )

# 11 ()) = ((。) h号 号子。 一 = =) * a ()() Evaluate the following.

Solution