Question

Determinati x din proporitia : (3/5)² totu supra x = 1/6 +1/3+1/4 totu supra 1/3-1/4

Answer 1

$\frac{ \frac{9}{25} }{x} = \frac{ \frac{1}{6} + \frac{1}{3}+ \frac{1}{4} }{ \frac{1}{3}- \frac{1}{4} } \\ \frac{ \frac{9}{25} }{x} = \frac{ \frac{9}{12} }{ \frac{1}{12} } \\ \frac{9}{25} =9x \\ 9x*25=9 \\ x= \frac{1}{25}$