(3a/2b-5x)(7a-4bx/2) при a=1 b=1 x=1

[latex] (\frac{3*1}{2*1 - 5*1}) (\frac{7*1 - 4*1*1}{2}) = -\frac{3}{3} * \frac{3}{2} = -\frac{9}{6} = -1\frac{3}{6} = -1,5 [/latex]

(3:2-5)*(7-4:2)=(1,5-5)*(7-2)= -3,5*5= -17,5