Question

Найти a/b, если (a-b)/(3a+5b)=11

Answer 1

( 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 
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a / b = ( - 1,75b ) / b = - 1,75 
Ответ ( - 1,75 )