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

Toán Lớp 6: Tìm x, làm nhanh nhất mình sẽ cho câu tlhn+5* ak g) ( 5x – 2 ) .6 mũ 3 = 3 . 6 mũ 5 h) ( 3x – 2 mũ 4 ) . 7 mũ 3 = 2 . 7 mũ 4 i) 4 – (

Toán Lớp 6: Tìm x, làm nhanh nhất mình sẽ cho câu tlhn+5* ak
g) ( 5x – 2 ) .6 mũ 3 = 3 . 6 mũ 5
h) ( 3x – 2 mũ 4 ) . 7 mũ 3 = 2 . 7 mũ 4
i) 4 – ( 27 – 3 ) = x – ( 13 – 4 )
j) 7 – x = 8 – ( -7)
k) 2x -6 = ( -3 ) – ( -7 )
L) 10 + 2x = 4 mũ 5 : 4 mũ 3

Comments ( 2 )

  1. g) (5x-2) . 6^3 = 3. 6^5
    5x-2= 3. 6^5 : 6^3
    5x-2= 3 . 6^2
    5x-2 = 3. 36
    5x -2 = 108
    5x= 2 +108
    5x= 110
    x= 110 : 5
    x= 22
    Vậy x= 22
    h) (3x – 2^4) . 7^3 = 2. 7^4
    3x – 16 = 2. 7^4: 7^3
    3x -16 = 2 .7
    3x-16= 14
    3x = 14 + 16
    3x= 30
    x= 30 :3
    x= 10
    Vậy x= 10
    i) 4 – (27 -3) = x – (13-4)
    4- 27 + 3 = x – 13 + 4
    4-27 + 3 + 13 -4 = x
    -11 =x
    x= -11
    Vậy x= -11
    j) 7 – x = 8-(-7)
    7-x = 8+7
    -x= 8+7 -7
    -x= 8
    x= -8
    Vậy x= -8
    k) 2x – 6 = -3 – (-7)
    2x -6 = -3 +7
    2x-6=4
    2x =6 +4
    2x= 10
    x=5
    Vậy x= 5
     l) 10 + 2x= 4^5 : 4^3
    10 + 2x= 4^2
    10 + 2x= 16
    2x= 16-10
    2x = 6
    x= 6:2
    x=3
    Vậy x= 3

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