Question

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Answer 1

$1)\;\frac15+\frac19+\frac13=\frac9{45}+\frac5{45}+\frac{15}{45}=\frac{9+5+15}{45}=\frac{29}{45}\\\\\\2)\;\frac12+\frac35-\frac23=\frac{15}{30}+\frac{18}{30}-\frac{20}{30}=\frac{15+18-20}{30}=\frac{13}{30}\\\\\\3)\;\frac56+\frac38-\frac14=\frac{20}{24}+\frac9{24}-\frac6{24}=\frac{20+9-6}{24}=\frac{23}{24}\\\\\\4)\;\frac59+\frac16+\frac34=\frac{20}{36}+\frac6{36}+\frac{27}{36}=\frac{20+6+27}{36}=\frac{53}{36}=1\frac{17}{36}$

$5)\;\frac13+\frac49+\frac56=\frac6{18}+\frac8{18}+\frac{15}{18}=\frac{6+8+15}{18}=\frac{29}{18}=1\frac{11}{18}\\\\\\6)\;\frac14+\frac15-\frac3{10}=\frac5{20}+\frac4{20}-\frac6{20}=\frac{5+4-6}{20}=\frac3{20}$