A+b/a*b  при а=   -1.5       b=2

[latex] \frac{a+b}{a}\cdot b = \frac{-1.5+2}{-1.5}\cdot 2 =\frac{0.5}{-1.5}\cdot 2 =\frac{0.5}{-1.5}\cdot 2 =- \frac{2}{3} [/latex]