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

Toán Lớp 6: tìm x a . x.3/5=4/5 b 5/6 + x= – 1/4

Toán Lớp 6: tìm x
a . x.3/5=4/5
b 5/6 + x= – 1/4

Comments ( 2 )

  1. a)x. 3/5=4/5
    =>x=4/5 :3/5
    =>x=4/5 . 5/3=4/3
    Vậy x=4/3
    b)5/6 +x=-1/4
    =>x=-1/4 -5/6
    =>x=-3/12 – 10/12
    =>x=-13/12
    Vậy x=-13/12

  2. $a) x.\frac{3}{5}=\frac{4}{5}$
    $⇒x = \frac{4}{5} : \frac{3}{5}$
    $⇒x = \frac{4}{3}$
    $b) \frac{5}{6} + x= – \frac{1}{4}$
    $⇒ x = -\frac{1}{4}-\frac{5}{6}$
    $⇒x = -\frac{13}{12}$

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