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

Toán Lớp 6: 15x-63x+99x=509+1 53x-96x+333x=2900

Toán Lớp 6: 15x-63x+99x=509+1
53x-96x+333x=2900

Comments ( 2 )

  1. Giải đáp:
     $15x-63x+99x=509+1$
    $⇔ 51x= 510$
    $⇔ x=510:51$
    $⇔ x=10$
    $Vậy$ $x=10$
    $53x-96x+333x=2900$
    $⇔ 290x=2900$
    $⇔ x=2900:290$
    $⇔ x=10$
    $Vậy$ $x=10$
     

  2. 15x – 63x + 99x = 509 + 1
    ⇒ (15 – 63 + 99)x = 510
    ⇒ 51x = 510
    ⇒ x = 10
    53x – 96x + 333x = 2900
    ⇒ x ( 53 – 96 + 333) = 2900
    ⇒ 290x = 2900
    ⇒ x = 10
     

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