Решите уравнение [latex]4- \frac{x}{7}= \frac{x}{9} [/latex]

[latex]4= \frac{x}{9}+ \frac{x}{7} [/latex] [latex]4= \frac{16}{63} x[/latex] [latex]x= \frac{4}{ \frac{16}{63}} [/latex] [latex]x=15 \frac{3}{4}=15,75 [/latex]