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

Toán Lớp 6: X – {57-[42+(-23-X)]}=13-{47+[25-(32-X)]}

Home/ Toán Lớp 6: X – {57-[42+(-23-X)]}=13-{47+[25-(32-X)]}

Toán Lớp 6: X – {57-[42+(-23-X)]}=13-{47+[25-(32-X)]}

Tháng Sáu 4, 2022 Toán học 2 Comments 0 views

Toán Lớp 6: X – {57-[42+(-23-X)]}=13-{47+[25-(32-X)]}

Comments ( 2 )

  1. phuongthuydung
    phuongthuydung
    4 Tháng Sáu, 2022 at 6:24 sáng
    Reply
    x – { 57 – [ 42 + ( -23 – x ) ]} = 13 – { 47 + [25 – ( 32 – x ) ] }
    ⇒ x-57+42-23-x=13-47-25+32-x
    ⇒ x-x-57+42-23=-27-x
    ⇒ -57+42-23=-27-x
    ⇒ -38=-27-x
    ⇒ x=-27-(-38)
    ⇒ x=11
     

  2. huongtructram
    huongtructram
    4 Tháng Sáu, 2022 at 6:24 sáng
    Reply
    x – {57 – [42 + (-23 – x)]} = 13 – {47 + [25 – (32 – x)]}
    => x – [57 – (42 – 23 – x)] = 13 – [47 + (25 – 32 + x)]
    => x – (57 – 42 + 23 + x) = 13 – (47 + 25 – 32 + x)
    => x – 57 + 42 – 23 – x = 13 – 47 – 25 + 32 – x
    => -57 + 42 – 23 = (13 – 47 – 25 + 32) – x
    => -38 = -27 – x
    => x = -27 – (-38)
    => x = 11
    Vậy x = 11
    ..

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

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