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

Toán Lớp 4: Tìm x: a/ x + 456788 = 9867655 b/ x – 23345 = 9886 c/ 283476 + x = 986352 d/ y × 123 = 44772 e/ X : 637 = 2345

Toán Lớp 4: Tìm x:
a/ x + 456788 = 9867655
b/ x – 23345 = 9886
c/ 283476 + x = 986352
d/ y × 123 = 44772
e/ X : 637 = 2345

Comments ( 2 )

  1. a) x + 456788 = 9867655
    ⇒ x = 9867655 – 456788 = 9410867
    b) x – 23345 = 9886
    ⇒ x = 9886 + 23345 = 33231
    c) 283476  + x = 986352
    ⇒ x = 986352 – 283476
    ⇒ x = 702876
    d) y x 123 = 44772
    ⇒ y = 44772 : 123 = 364
    e) x : 637 = 2345
    ⇒ x = 2345 x 637 = 1493765
     

  2. a) x + 456788 = 9867655
    x = 9867655 – 456788
    x = 9410867
    b) x – 23345 = 9886
    x = 23345 + 9886
    x = 33231
    c) 283476 + x = 986352
    x = 986352 – 283476
    x = 702876
    d) y \times 123 = 44772
    y = 44772 : 123
    y = 364
    e) x : 637 = 2345
    x = 637 \times 2345
    x = 1493765

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