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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 7: `1/2 ×|x|+0,75=5/3` `|2x-1|/-3=-1/2`

Toán Lớp 7: 1/2 ×|x|+0,75=5/3
|2x-1|/-3=-1/2

Comments ( 2 )

  1. Giải đáp+Lời giải và giải thích chi tiết:
    1/2 .|x|+0,75=5/3$\\$1/2.|x|=5/3-0,75$\\$1/2.|x|=11/12$\\$|x|=11/12:1/2$\\$|x|=11/16$\\$=>x\in{-11/6;11/6}
    |2x-1|/-3=-1/2$\\$|2x-1|=-1/2.(-3)$\\$|2x-1|=3/2$\\$<=>\(\left[ \begin{array}{l}2x-1=\dfrac32\\2x-1=-\dfrac32\end{array} \right.\) <=>\(\left[ \begin{array}{l}x=\dfrac54\\x=-\dfrac14\end{array} \right.\)

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222-9+11+12:2*14+14 = ? ( )

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