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8 March, 20:02

Question 7

Algebraically solve for x:

-3x+3+12 = x6-12

+2
Answers (1)
  1. 8 March, 20:15
    0
    3x+15=6x-12

    2 Add

    3

    x

    3x to both sides.

    1

    5

    =

    6

    x

    -

    1

    2

    +

    3

    x

    15=6x-12+3x

    3 Simplify

    6

    x

    -

    1

    2

    +

    3

    x

    6x-12+3x to

    9

    x

    -

    1

    2

    9x-12.

    1

    5

    =

    9

    x

    -

    1

    2

    15=9x-12

    4 Add

    1

    2

    12 to both sides.

    1

    5

    +

    1

    2

    =

    9

    x

    15+12=9x

    5 Simplify

    1

    5

    +

    1

    2

    15+12 to

    2

    7

    27.

    2

    7

    =

    9

    x

    27=9x

    6 Divide both sides by

    9

    9.

    2

    7

    9

    =

    x

    9



    27

    = x

    7 Simplify

    2

    7

    9

    9



    27

    to

    3

    3.

    3

    =

    x

    3=x

    8 Switch sides.

    x

    =

    3

    x=3
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