What is the answer to -9=13x-7x+12 ?

The answer to -9=13x-7x+12 is x=-7/2

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-9=13x-7x+12

- 9 = 13 x - 7 x + 12

x = - \frac{7}{2}

Decimal Notation

x = - 3.5

Solution steps

- 9 = 13 x - 7 x + 12

Switch sides

13 x - 7 x + 12 = - 9

Add similar elements:

13 x - 7 x = 6 x

6 x + 12 = - 9

Move

12

to the right side

6 x = - 21

Divide both sides by

6

x = - \frac{7}{2}

\frac{2 w - 3}{3} = w - 3

- 3 (4 x + 3) + 5 (4 x + 2) = - 95

5 x + 1 = 8 x - 23

2 x + 12 - 7 x = - 2

\frac{1}{4} + \frac{2 x + 7}{12} = - 2