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

Toán Lớp 4: a) x – 2008 = 7999 – 78

Toán Lớp 4: a) x – 2008 = 7999 – 78

c) 168593 + x = 427157 – 2345
b) x + 56789 = 215352 : 3
d) 976318 – x = 764280 : 9

Comments ( 2 )

  1. a) x – 2008 = 7999 – 78
        x – 2008 = 7921
                    x = 7921 + 2008
                    x = 9929
    b) x + 56789 = 215352
                        x = 215352 – 56789
                        x = 158 563
    c) 168593 + x = 427157 – 2345
        168593 + x = 424812
                         x = 424812 – 168593
                         x = 256 219
    d) 976318 – x = 764280 : 9
         976318 – x = 84 920
                         x = 976318 – 84 920
                         x = 891 398

  2. $@Vy$
    Giải đáp:
     ↓↓↓
    Lời giải và giải thích chi tiết:
    a) x – 2008 = 7999 – 78
    -> x-2008= 7921
    -> x = 7921+2008
    -> x=9929
    Vậy x=9929
    c) 168593 + x = 427157 – 2345
    -> 168593 + x = 424812
    -> x = 424812-168593
    ->x=256219
    Vậy x=256219
    b) x + 56789 = 215352 : 3
    -> x + 56789 = 717884
    -> x  = 717884-56789
    -> x = 661095
    Vậy x = 661095
    d) 976318 – x = 764280 : 9
    -> 976318 – x = 84920
    -> x = 976318 – 84920
    -> x=891398
    Vậy x =891398

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

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