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

Toán Lớp 7: lm giúp mik với 1/5+[x-13/10]=3/2

Toán Lớp 7: lm giúp mik với
1/5+[x-13/10]=3/2

Comments ( 2 )

  1. $\frac{1}{5}$ +[x-$\frac{13}{10}$]=$\frac{3}{2}$
    =>x-$\frac{13}{10}$=$\frac{3}{2}$-$\frac{1}{5}$
    => x-$\frac{13}{10}$=$\frac{13}{10}$
    =>x=$\frac{13}{10}$+$\frac{13}{10}$
    =>x=$\frac{13}{5}$

  2. 1/5+[x-13/10]=3/2
    =>1/5+x-13/10=3/2
    =>x+(-13/10)+1/5=3/2
    =>x-11/10=3/2
    =>x=3/2+11/10
    =>x=13/5
    Vậy  x=13/5

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