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

Toán Lớp 5: Tìm x biết: a) x+`(1)/(3)`=`(4)/(3)` b) 4 ×( x+23)=240

Toán Lớp 5: Tìm x biết:
a) x+(1)/(3)=(4)/(3)
b) 4 ×( x+23)=240

Comments ( 2 )

  1. a, x + 1/3=4/3
    ⇒ x = 4/3-1/3
    ⇒x  =  3/3 = 1
    b, 4×(x+23)=240
    ⇒ x +23 = 240 : 4
    ⇒ x +23  = 60
    ⇒ x = 60 – 23
    ⇒ x =   37
     

  2. a) x + 1/3 = 4/3
    x = 4/3 – 1/3
    x = 3/3 
    Vậy x = 3/3 = 1
    b) 4 x (x+23) = 240
    x + 23 = 240 : 4 
    x + 23 = 60
    x = 60 – 23
    x = 37
    Vậy x = 37

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

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