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

Toán Lớp 4: A)x +768+352 =1405 B)297+x 846,=1280

Toán Lớp 4: A)x +768+352 =1405 B)297+x 846,=1280

Comments ( 2 )

  1. Đây nhé …..bài này dạn toán tìm x
    toan-lop-4-a-768-352-1405-b-297-846-1280

  2. a)
    x + 768 + 352 = 1405
    x = 1405 – 352 – 768
    x = 285
    ===================
    b) 297 + x + 846 = 1280
    297 + x = 1280 – 846
    297 + x = 434
    x = 434 – 297
    x = 137

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

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