What is the answer to 12x+3(3x+6)=x+8 ?

The answer to 12x+3(3x+6)=x+8 is x=-1/2

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12x+3(3x+6)=x+8

12 x + 3 (3 x + 6) = x + 8

x = - \frac{1}{2}

Decimal Notation

x = - 0.5

Solution steps

12 x + 3 (3 x + 6) = x + 8

Expand

3 (3 x + 6) : 9 x + 18

12 x + 9 x + 18 = x + 8

Add similar elements:

12 x + 9 x = 21 x

21 x + 18 = x + 8

Move

18

to the right side

21 x = x - 10

Move

x

to the left side

20 x = - 10

Divide both sides by

20

x = - \frac{1}{2}

43 + 109 + 84 + x = 360

x, 5 x + 7 y = 17

x, f^{- 1} (x) = x + 1

\frac{19}{20} = p - 1 \frac{1}{4}

x + 2 x - 3 = 0