Question

решите уравнения пожалуйста!!

Answer 1

Ответ:

Пошаговое объяснение:

1)

$2 \frac{1}{3} x+1 \frac{1}{15}x=6 \frac{4}{5} \\\\x*(2 \frac{1}{3}+1 \frac{1}{15})=6 \frac{4}{5}\\\\x*( \frac{7}{3} +\frac{16}{15})=6 \frac{4}{5}\\\\x*(\frac{35}{15}+\frac{16}{15} )=6 \frac{4}{5} \\\\x* \frac{51}{15}=6 \frac{4}{5} \\\\x=6 \frac{4}{5} : \frac{51}{15} \\\\x=\frac{34}{5}*\frac{15}{51} \\\\x=2$

2)

$(x-\frac{3}{5}x)* 1 \frac{1}{24}-1 \frac{3}{4} = 1 \frac{1}{6}\\\\(x-\frac{3}{5}x)* 1 \frac{1}{24}= 1 \frac{1}{6}+1 \frac{3}{4}\\\\(x-\frac{3}{5}x)* 1 \frac{1}{24}=\frac{7}{6}+\frac{7}{4}\\\\(x-\frac{3}{5}x)* 1 \frac{1}{24}=\frac{14}{12}+\frac{21}{12}\\\\(x-\frac{3}{5}x)* 1 \frac{1}{24}=\frac{35}{12}\\\\(x-\frac{3}{5}x)=\frac{35}{12} : 1 \frac{1}{24}\\\\(x-\frac{3}{5}x)=\frac{35}{12}*\frac{24}{25}\\(x-\frac{3}{5}x)=\frac{14}{5}\\\\ \frac{2}{5} x=\frac{14}{5}\\\\ x=\frac{14}{5}:(\frac{2}{5})$

$x=\frac{14}{5}*(\frac{5}{2})\\\\x=7$