Question

(1 5/4х+3 1/3)*1 3/19=16.5 Поможіть срочно!!!!!

Answer 1

$(1\frac{5}{4}x+3\frac{ 1}{3} )*1 \frac{3}{19} =16.5\\\\ ( \frac{9}{4}x+ \frac{ 10}{3} )* \frac{22}{19} =16.5\ \ /*19\\\\ ( \frac{9}{4}x+ \frac{ 10}{3} )*22 =313,5\\\\\frac{99}{2}x +\frac{220}{3}=313,5\ \ /*6\\\\297x+440=1881\\\\297x=1881-440\\\\297x=1441\ \ /:297\\\\x=4\frac{253}{297}\\\\x= 4\frac{23}{27}$