What is the answer to 3x+9+2x=x-2x-3 ?

The answer to 3x+9+2x=x-2x-3 is x=-2

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3x+9+2x=x-2x-3

3 x + 9 + 2 x = x - 2 x - 3

x = - 2

Solution steps

3 x + 9 + 2 x = x - 2 x - 3

Group like terms

3 x + 2 x + 9 = x - 2 x - 3

Add similar elements:

3 x + 2 x = 5 x

5 x + 9 = x - 2 x - 3

Add similar elements:

x - 2 x = - x

5 x + 9 = - x - 3

Move

9

to the right side

5 x = - x - 12

Move

x

to the left side

6 x = - 12

Divide both sides by

6

x = - 2

x 3 = 8

x, 2 x + 2 y = 22

x, 3 x - 4 y - 5 = 0

\frac{2}{3} (y + 57) = 178

2 = \frac{10 + z}{- 3}