what is the value of x when -3x + 9 = -18

3 answers

To solve the equation \(-3x + 9 = -18\), follow these steps:

  1. Subtract 9 from both sides of the equation: \[ -3x + 9 - 9 = -18 - 9 \] This simplifies to: \[ -3x = -27 \]

  2. Now, divide both sides by -3: \[ x = \frac{-27}{-3} \] This simplifies to: \[ x = 9 \]

Thus, the value of \(x\) is \(9\).

what is the value of n? 13 - 2n = -109

To solve the equation \(13 - 2n = -109\), follow these steps:

  1. Subtract 13 from both sides: \[ 13 - 2n - 13 = -109 - 13 \] This simplifies to: \[ -2n = -122 \]

  2. Now, divide both sides by -2: \[ n = \frac{-122}{-2} \] This simplifies to: \[ n = 61 \]

Thus, the value of \(n\) is \(61\).