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

Toán Lớp 5: Tìm X X : 0,25 + X x 8 + X : 50% + X : 20% + X = 45 Giúp mik vs

Toán Lớp 5: Tìm X X : 0,25 + X x 8 + X : 50% + X : 20% + X = 45
Giúp mik vs

Comments ( 2 )

  1. $\text{x ÷ 0,25 + x × 8 + x ÷ 50% + x ÷ 20% + x = 45}$
    $\text{x × 4 + x × 8 + x × 2 + x × 5 + x × 1 = 45}$
    $\text{x × ( 4 + 8 + 2 + 5 + 1) = 45}$
    $\text{x × 20 = 45}$
            $\text{x = 45 ÷ 20}$
            $\text{x = 2,25}$
    $\text{@dautay17747}$

  2. Giải đáp+Lời giải và giải thích chi tiết:
    X : 0,25 + X × 8 + X : 50% + X : 20% + X = 45
    X ×4 + X × 8 + X ×2 + X ×5 + X = 45
    X ×4 + X × 8 + X ×2 + X ×5 + X ×1= 45
    X ×(4 + 8 + 2 + 5 + 1)= 45
    X ×20= 45
    X =45:30
    X=2,25

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

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