Question

$\frac{4.6}{x + 4.4} = \frac{8.4}{3 x + 5.1}$
пожалуйста​

Answer 1

Ответ:

x = 2,5

Пошаговое объяснение:

$\frac{4,6}{x+4,4} =\frac{8,4}{3x+5,1} \\\\\frac{\frac{23}{5} }{x+\frac{22}{5}} = \frac{\frac{42}{5}}{3x+\frac{51}{10}}\\\frac{\frac{23}{5}}{\frac{5x+22}{5}}=\frac{\frac{42}{5}}{\frac{30x+51}{10}} \\\frac{23}{5x+22} = \frac{84}{3*(10x+17)}\\\frac{23}{5x+22} = \frac{28}{10x+17}\\23*(10x+17)=28*(5x+22)\\230x+391=140x+616\\230x-140x=616-391\\90x=225\\x=\frac{5}{2} \\x=2,5$