-12_5×(5_2x-3_2y)+1_2×(9_5y+28_5x)
-1_10×(24(5_2x-3_2y)-5(9_5y+28_5x))
-1_10×(60x-36y-9y-28x)
-1_10×(32x-45y)
(альтернативна)-0,1(32x-45y)
-12_5×(5_2x-3_2y)+1_2×(9_5y+28_5x)
-1_10×(24(5_2x-3_2y)-5(9_5y+28_5x))
-1_10×(60x-36y-9y-28x)
-1_10×(32x-45y)
(альтернативна)-0,1(32x-45y)