Move all terms containing "x" to the left, all the other terms to the right. Add "-5x" to each side of the equation. 3 + -4x + -5x = 30 + 5x + -5x Combine like terms: -4x + -5x = -9x 3 + -9x = 30 +5x + -5x Combine like terms: 5x + -5x = 0 0 + -9x = 30 +0 3 + -9x = 30 Add "-3" to each side of the equation. 3 + -3 + -9x = 30 + 3 Combine like terms: 3 + -3 = 0 0 + -9x = 30 + -3 -9x = 30 + -3 Combine like terms: 30 + -3 = 27 -9x = 27 Divide each side by "-9". x = -3 Simplifying: x = -3