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

Toán Lớp 6: a) (-5) + 12 = b) (-25) +72 c) 42 + (-51)

Toán Lớp 6: a) (-5) + 12 = b) (-25) +72 c) 42 + (-51)

Comments ( 2 )

  1. a) (-5) + 12 = 12 – 5 = 7;
    b) (-25) + 72 = 72 – 25 = 47;
    c) 42 + (-51) = – (51 – 42) = -9.

  2. $@Shinn$
    a, (-5)+12=(12-5)=7
    b, (-25)+72=(72-25)=47
    c, 42+(-51)=-(51-42)=-9

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

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