Question

Решите уравнение:1)7 7/30-(5 11/30-y)=3 19/30;2)(x-1 9/17)+2 14/17=5 5/17.

Answer 1

$7frac7{30}-left(5frac{11}{30}-yright)=3frac{19}{30}\7frac7{30}-5frac{11}{30}+y=3frac{19}{30}\y=3frac{19}{30}-7frac7{30}+5frac{11}{30}=1frac{23}{30}\\\left(x-1frac9{17}right)+2frac{14}{17}=5frac5{17}\x-1frac9{17}+2frac{14}{17}=5frac5{17}\x=5frac5{17}+1frac9{17}-2frac{14}{17}=4$