Question

1/3+1/4 fração me ajudem

Answer 1

$\Large\boxed{\begin{array}{l}\underline{\rm m\acute etodo\,1:}\\\begin{array}{c|c}\sf3,4&\sf2\\\sf3,2&\sf2\\\sf3,1&\sf3\\\sf1,1\end{array}\\\sf m\cdot m\cdot c~(3,4)=2\cdot2\cdot3=12\\\sf\dfrac{1}{3}=\dfrac{4}{12}~~~~\dfrac{1}{4}=\dfrac{3}{12}\\\\\sf\dfrac{1}{3}+\dfrac{1}{4}=\dfrac{4}{12}+\dfrac{3}{12}=\dfrac{7}{12}\end{array}}$

$\Large\boxed{\begin{array}{l}\underline{\rm m\acute etodo\,2:}\\\sf\dfrac{a}{b}+\dfrac{c}{d}=\dfrac{a\times d+b\times c}{b\times d}\\\\\sf\dfrac{1}{3}+\dfrac{1}{4}=\dfrac{1\times4+3\times1}{3\times4}=\dfrac{4+3}{12}=\dfrac{7}{12}\end{array}}$