Question

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Answer 1

1)

2 ( 1 + 2x ) = 10

2 + 4x = 10

4x = 10 - 2

4x = 8

x = 2

2)

2 ( 3x - 2 ) = 2

6x - 4 = 2

6x = 2+ 4

6x = 6

x = 1

3)

-2 ( 3x - 2 ) = -2

-6x + 4 = -2

4 + 2 = 6x

6 = 6x

1 = x

4)

x + 2 ( 3 - x ) = x

x + 6 - 2x = x

6 = 2x-x+x

6 = 2x

3 = x

5)

3x + 1 = 3 - ( 2 - 2x )

3x + 1 = 3 - 2 + 2x

3x + 1 = 1 + 2x

3x - 2x = 1-1

  x  = 0