10x+9=7x

To solve the equation \(10x + 9 = 7x\), follow these steps: 1. Subtract \(7x\) from both sides of the equation: \[ 10x - 7x + 9 = 7x - 7x \] This simplifies to: \[ 3x + 9 = 0 \] 2. Next, subtract \(9\) from both sides: \[ 3x + 9 - 9 = 0 - 9 \] This simplifies to: \[ 3x = -9 \] 3. Finally, divide both sides by \(3\) to solve for \(x\): \[ x = \frac{-9}{3} \] This gives us: \[ x = -3 \] So the solution to the equation \(10x + 9 = 7x\) is \(x = -3\).