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

Toán Lớp 6: 3.21 a, (62-81)-(12-59+9) b, 39+(13-26)-(62+39)

Toán Lớp 6: 3.21
a, (62-81)-(12-59+9)
b, 39+(13-26)-(62+39)

Comments ( 2 )

  1. Lời giải và giải thích chi tiết:
    a)
    (62 – 81) – (12 – 59 + 9)
    = 62 – 81 – 12 + 59 – 9
    = 62 – 12 + 59 – 81 – 9
    = 50 + 59 – 90
    = 109 – 90
    = 19
    b)
    39 + (13 – 26) – (62 + 39)
    = 39 + 13 – 26 – 62 – 39
    = 39 – 39 + 13 – 88
    = -75

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

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