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b.-2/3xy+1/3xy=1/2x³y+1/2x³
-1/3xy=1/54*9+1/54
-1=10/54 eee....
b) (-½)x³y-(⅔)xy= (½)x³-(⅓)xy
(-⅔)xy+(⅓)xy= (½)x³+ (½)x³y
(-⅓)xy= (½)x³+ (⅓)x³y
(-⅓)×(⅓)×9= (½)×(⅓)³+ (⅓)×(⅓)³×9
(-⅓)× 9 = (½)×(¹/₂₇) + (⅓)×(¹/₂₇)×9
-1= (¹/₅₄)+(¹/₉) ×3
-1= (¹/₅₄)+ (⅓)
-1= (¹/₅₄)+ (¹⁸/₅₄)
-1= (¹⁹/₅₄)
Drugie równianie jest sprzeczne!!!