a)3x – 2 = 2x – 3 b)3 – 4y + 24 + 6y = y + 27 + 3y c)7 – 2x = 22 – 3x d)8x – 3 = 5x + 12 e)x – 12 + 4x = 25 + 2x – 1 f)x + 2x + 3x – 19 = 3x + 5 Gi

Bởi

a)3x – 2 = 2x – 3
b)3 – 4y + 24 + 6y = y + 27 + 3y
c)7 – 2x = 22 – 3x
d)8x – 3 = 5x + 12
e)x – 12 + 4x = 25 + 2x – 1
f)x + 2x + 3x – 19 = 3x + 5
Giải hộ mik vs

0 bình luận về “a)3x – 2 = 2x – 3 b)3 – 4y + 24 + 6y = y + 27 + 3y c)7 – 2x = 22 – 3x d)8x – 3 = 5x + 12 e)x – 12 + 4x = 25 + 2x – 1 f)x + 2x + 3x – 19 = 3x + 5 Gi”

  2. a)3x – 2 = 2x – 3

    => 3x – 2x = -3 + 2

    => x = -1

    b)3 – 4y + 24 + 6y = y + 27 + 3y

    => 2y + 27 = 4y + 27 

    => 2y – 4y = 27 – 27 

    => – 2y = 0

    => y = 0 

    c)7 – 2x = 22 – 3x

    => 3x – 2x = 22 – 7

    => x = 15

    d)8x – 3 = 5x + 12

    => 8x – 5x = 12 + 3

    => 3x = 15

    => x = 5

    e)x – 12 + 4x = 25 + 2x – 1

    => 5x – 12 = 2x + 24

    => 5x – 2x = 24 + 12 

    => 3x = 36

    => x = 12

    f)x + 2x + 3x – 19 = 3x + 5

    => 6x – 19 = 3x + 5

    => 6x – 3x = 5 + 19

    => 3x = 24

    => x = 8

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