Найти a/b, если (a-b)/(3a+5b)=11
( a - b ) / ( 3a + 5b ) = 11 a - b = 11( 3a + 5b ) a - b = 33a + 55b 33a - a = - b - 55b 32a = - 56b a = - 56/32b = - 1,75b ------------------------------ a / b = ( - 1,75b ) / b = - 1,75 Ответ ( - 1,75 )