Question

7 7/30-(х- 3/7)=2 6/7 решите уравнение

Answer 1

$x- \frac{3}{7}=7 \frac{7}{30}-2 \frac{6}{7} \\ x= \frac{217}{30}- \frac{20}{7}+ \frac{3}{7} \\ x= \frac{217}{30}- \frac{17}{7}= \frac{1009}{210}=4 \frac{169}{210}$