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

Toán Lớp 6: A) 435-(x+16)=425÷17 B) (x+4/3)×7/4=5-7/6

Toán Lớp 6: A) 435-(x+16)=425÷17
B) (x+4/3)×7/4=5-7/6

Comments ( 2 )

  1. Giải đáp:
     
    Lời giải và giải thích chi tiết:
    A)
    $435-(x+16)=425÷17$
    $435-(x+16)=25$
    $x+16 = 435-25$
    $x+16 = 410$
    $x = 410-16$
    $x=394$
    B)
    (x+4/3)×7/4=5-7/6
    (x+4/3)×7/4=23/6
    x+4/3 = 46/21
    x= 46/21 – 4/3
    x= 6/7

  2. a ) 435 – ( x + 16 ) = 425 : 17
    435 – ( x + 16 ) = 25
    x + 16 = 435 – 25
    x + 16 = 410
             x = 410 – 16
              x = 394
    Vậy x = 394
    b ) ( x + 4/3 ) × 7/4 = 5 – 7/6
    ( x + 4/3 ) × 7/4 = 23/6
    x + 4/3 = 23/6 : 7/4
    x + 4/3 = 46/21
              x = 46/21 – 4/3
               x = 18/21 = 6/7
    Vậy x = 6/7
    #dtkc
     

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

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