Exercise 33 Page 396

To solve an equation, we should first gather all of the variable terms on one side and all of the constant terms on the other side using the Properties of Equality. In this case, we need to start by combining like terms to simplify the left-hand side of the equation.

x + 72 + 63 + 120 = 360

Add terms

x + 255 = 360

Now, we can continue to solve using the Properties of Equality.

x + 255 = 360

$LHS - 255 = RHS - 255$

x = 105

The solution to the equation is

x = 105 .