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

Toán Lớp 5: tim x : x + x nhan 28 : 7+x nhan 30 : 6 = 2860

Toán Lớp 5: tim x :
x + x nhan 28 : 7+x nhan 30 : 6 = 2860

Comments ( 2 )

  1. x + x × 28 : 7 + x × 30 : 6 = 2860
    x × 1 + x × 4 + x × 5 = 2860
    x × ( 1 + 4 + 5 ) = 2860
    x × 10 = 2860
             x = 2860 : 10
             x = 286
    #dtkc

  2. Lời giải và giải thích chi tiết:
    x+x×28÷7+x×30÷6=2860
    ↔️x+x×4+x×5=2860
    ↔️x×(1+4+5)=2860
    ↔️x×10=2860
    ↔️x=2860÷10
    ↔️x=286

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

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