When solving these kinds of equations you want to isolate the unknown on one side and everything else on the other. You can carry out any operation on the equation as long as you do it equally to both sides. Let's start with x + 4 = 2x + 3. First let's get all our 'x' terms on the left side of the equation and all other terms on the right. Do this by subtracting 2x and 4 to both sides of the equation. x + 4 - 2x - 4 = 2x + 3 -2x -4 Combine like terms to simplify to: -x = -1 Get rid of the negative by multiplying both sides by -1 to get: x = 1
Use the same method to solve your second equation.