1)(x/y^2-1/x):(1/y+1/x)
(x^2-y^2/xy^2):(x+y/xy)
(x-y)*(x+y)/xy^2 * (xy/x+y)
x-y/y
0,4*5,25-0,4*7,3=2,1-2,92=-0,82
Task/28563822
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α =(180° *80) /100 =144° ;
β =90° *(2/3) =(90°*2) /3 = 60° ;
γ =360° - (α+β) = 360° - (144°+60° ) =360° - 204° =156°.