Question Number 118369 by Samokoji last updated on 17/Oct/20
$$\:\mathrm{657}×\mathrm{10}^{\mathrm{4}} =\frac{\mathrm{5}}{\mathrm{7}}+ \\ $$
Commented by MJS_new last updated on 17/Oct/20
$${a}={b}+{x}\:\Rightarrow\:{x}={a}−{b} \\ $$$${a}−\frac{{p}}{{q}}=\frac{{aq}}{{q}}−\frac{{p}}{{q}}=\frac{{aq}−{p}}{{q}} \\ $$$$\mathrm{where}'\mathrm{s}\:\mathrm{the}\:\mathrm{problem}? \\ $$