Question

a, x + 12 = 4 x 4

b, x + 10 = 20 x 3

Answer 1

a, x + 12 = 4 x 4

a, x + 12 =16

x = 16-12

x = 4

b, x + 10 = 20 x 3

b, x + 10 = 60

b, x = 60 - 10

x = 50

Answer 2

a) x=4

b)x=50

Answer 3

a, x + 12 = 4 x 4

    x + 12 = 16

            x = 16 - 12

             x = 4

b, x + 10 = 20 x 3

    x + 10 = 60

            x = 60 - 10

            x = 50

Answer 4

a,x=4

b'x=50

Answer 5

a,4 

b,50

Answer 6

a, x + 12 = 4 * 4

x + 12 = 16

x = 16 - 12

x = 4

b, x + 10 = 20 * 3

x + 10 = 60

x = 60 - 10

x = 50

Answer 7

a, x + 12 = 4 x 4

x  + 12 = 16

x = 16 - 12

x = 4

b, x + 10 = 20 x 3

x + 10 = 60

x = 60 - 10

x = 50

Answer 8

a, x + 12 = 4 x 4

    x + 12 = 16

        x = 16 - 12

        x = 4

    Vậy : x = 4

b, x + 10 = 20 x 3

    x + 10 = 60

      x = 60 - 10

      x = 50

   Vậy : x = 50

Answer 9

a, x + 12 = 4 x 4 

    x + 12 = 16

    x        = 16 - 12

    x        = 4

b, x + 10 = 20 x 3 

   x + 10 = 60

   x         = 60 - 10

   x         = 50

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