Question

10х
Дробь -5х
2х-3. Если х=0,5

Answer 1

$frac{10x}{2x-3} -5x= frac{10x-10 x^{2} +15x}{2x-3}=$$frac{25x-10 x^{2} }{2x-3} = frac{5x(5-2x)}{2x-3} = frac{5*0.5(5-2*0.5)}{2*0.5-3}= frac{2.5*4}{-2} =-5$