Question

Решите уровнение.
0,084÷(6,2-x)=1,2

Answer 1

$\displaystyle 0,084:(6,2-x)=1,2;x\neq 6,2\\\\\frac{21}{250}:(\frac{31}{5}-x)=1,2\\ \\\frac{21}{250}:\frac{31-5x}{5}=1,2\\ \\\frac{21}{250}*\frac{5}{31-5x}=1,2\\ \\\frac{21}{50}*\frac{1}{31-5x}=1,2\\ \\\frac{21}{50(31-5x)}=1,2\\ \\21=60(31-5x)\\ 21=1860-300x\\ 300x=1860-21\\ 300x=1839\\ \\x=\frac{613}{100}=6\frac{13}{100}=6,13$