Question

((2x):(x+3))+((30:(x^2-9))=5:(x-3)

Answer 1

((2x):(x+3))+((30:(x^2-9))=5:(x-3)   | домножаем на  x^2-9

2x(x-3)+30=5(x+3)

2x^2-6x+30=5x+15

2x^2-11x+15=0

D=121-8*15=1

x1=(11+1)/4=3 

x2=10/4=2,5