Toán Lớp 6: X + 3/4 = 3/5 + -4/3 X + 7/2 = -2/3 - 3/5 5/8 - X = -3/10 X - 2/7 = 7/21 -X - 3/4 = -8/13 11/12 - ( 2/5 + X ) = 2/3 Giúp với ạ

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Toán Lớp 6:  X + 3/4 = 3/5 + -4/3 X + 7/2 = -2/3 - 3/5 5/8 - X = -3/10 X - 2/7 = 7/21 -X - 3/4 = -8/13 11/12 - ( 2/5 + X ) = 2/3 Giúp với ạ

dananhnhu2k4 · Answer

x+$ frac{3}{4}$ =$ frac{3}{5}$ +$ frac{-4}{3}$   &rArr; x+$ frac{3}{4}$ =-$ frac{11}{15}$   &rArr;x=-$ frac{11}{15}$-$ frac{3}{4}$   &rArr;x=-$ frac{89}{60}$    x+$ frac{7}{2}$=-$ frac{2}{3}$-$ frac{3}{5}$   &rArr; x+$ frac{7}{2}$=$ frac{-19}{15}$   &rArr;x=$ frac{-19}{15}$-$ frac{7}{2}$   &rArr;x=-$ frac{143}{30}$    $ frac{5}{8}$-x=-$ frac{3}{10}$   &rArr;x= $ frac{5}{8}$--$ frac{3}{10}$   &rArr;x=$ frac{37}{40}$    x-$ frac{2}{7}$=$ frac{7}{21}$   &rArr;x=$ frac{7}{21}$+$ frac{2}{7}$   &rArr;x=$ frac{13}{21}$    -x -$ frac{3}{4}$=-$ frac{8}{13}$   &rArr;-x=-$ frac{8}{13}$+$ frac{3}{4}$   &rArr;-x=$ frac{7}{52}$    $ frac{11}{12}$-($ frac{2}{5}$+x)=$ frac{2}{3}$   &rArr;($ frac{2}{5}$+x)=$ frac{11}{12}$-$ frac{2}{3}$   &rArr;$ frac{2}{5}$+x=$ frac{1}{4}$   &rArr;x=$ frac{1}{4}$-$ frac{2}{5}$   &rArr;x=-$ frac{3}{20}$

giahan44 · Answer

x + 3/4 = 3/5 +  frac{-4}{3}     x  + 3/4 = -11/15     x             = -11/15 - 3/4     x             = -89/60     -------------------------------------------     x + 7/2 = -2/3 - 3/5     x + 7/2 =-19/15     x        = -19/15 - 7/2     x         =-143/30     ----------------------------------------------------     5/8 - x = -3/10           x     = 5/8 -  frac{-3}{10}           x         =37/40     --------------------------------------------------------     x - 2/7 = 7/21     x         = 7/21 + 2/7     x          = 7/21 + 6/21     x         = 13/21     ---------------------------------------------------------     -x - 3/4 = -8/13     -3/4 + 8/13 = x     -7/52           = x     Vậy x = -7/52     ---------------------------------------------------------     11/12 - ( 2/5 + x) = 2/3                  (2/5 + x) = 11/12 - 2/3                   (2/5 + x) = 11/12 - 8/12                   2/5 + x = 1/4                                x = 1/4 - 2/5                               x =-3/20

Toán Lớp 6: X + 3/4 = 3/5 + -4/3 X + 7/2 = -2/3 – 3/5 5/8 – X = -3/10 X – 2/7 = 7/21 -X – 3/4 = -8/13 11/12 – ( 2/5 + X ) = 2/3 Giúp với ạ

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