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

Toán Lớp 7: |x-2,3|-3,7=6,3 |2x-1|-1/3=2/3

Toán Lớp 7: |x-2,3|-3,7=6,3
|2x-1|-1/3=2/3

Comments ( 2 )

  1. |x-2,3|-3,7=6,3
    ⇔ |x-2,3| = 10
    ⇔ x-2,3 = ±10
    ⇔ x – 2,3 = 10 hoặc x – 2,3 = -10
    ⇔ x = 12,3 hoặc x = -7,7
    ——–
    |2x-1|-1/3=2/3
    ⇔ |2x-1| = 1
    ⇔ 2x-1 = ±1
    ⇔ 2x – 1 = 1 hoặc   2x – 1 = -1
    ⇔ x = 1 hoặc x = 0
     

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