3x+(-4)=2x+9

To solve this for x.....

3x + (-4) = 2x + 9

3x - 4 = 2x + 9

Add 4 to both sides of the equation.

3x = 2x + 9 + 4

3x = 2x + 13

Subtract 2x from both sides of the equation.

3x - 2x = 13

x = 13

12=6/7x

12 = \(\frac67\)x

Multiply both sides of the equation by \( \frac76 \)

12 * \( \frac76 \) = \(\frac67 \)x * \( \frac76 \)

14 = x

The answer is x=13