Question

1) (-1/3 - 2/5)-Х=1/5 ;2)(7/9-8/27)-Х=2/3;помогите)

Answer 1

Ответ на прикреплённом фото.

Answer 2

$1)\;\left(-\frac13-\frac25\right)-x=\frac15\\\\\left(-\frac5{15}-\frac6{15}\right)-x=\frac3{15}\\\\-\frac{11}{15}-x=\frac3{15}\\\\x=-\frac{11}{15}-\frac3{15}=-\frac{14}{15}$

$2)\;\left(\frac79-\frac8{27}\right)-x=\frac23\\\\\left(\frac{21}{27}-\frac8{27}}\right)-x=\frac{18}{27}\\\\\frac{13}{27}-x=\frac{18}{27}\\\\x=\frac{13}{27}-\frac{18}{27}=-\frac5{27}$