Question

12 1345 -(у -5 1745)=3 2345

Answer 1

$12frac{13}{45}-(y-5frac{17}{45})=3frac{23}{45}$

 

$12frac{13}{45}-y+5frac{17}{45}=3frac{23}{45}$

 

$frac{553}{45}-y+frac{242}{45}=frac{158}{45}$

 

$y=frac{553}{45}-frac{158}{45}+frac{242}{45}$

 

$y=frac{553-158+242}{45}=frac{637}{45}=14frac{7}{45}$