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⅔ x+⅓ y+2⅓ x-⅓ y=3x
15xy-4x+8y-6xy+5x-xy=8xy+x+8y
0,2x²-2y+1,8x²+4,3y-x=2x²+2,3y-x
-¼m+⅛n-⅛m+0,375m=-0,25m+0,5n-0,5m+0,375m=-0,375m+0,5n
b. wynik - 8/2 x
c. wynik - 8 xy + x + 8y
d. wynik - 1, 175m