Why is the first step when solving 2x - 15 - 4x = 3 to combine like terms?
A. Because there are like terms (the variables) on the same side of the equation.
B. Because there are like terms (the constants) on the same side of the equation.
C. Because there are like terms (the variables) on opposite sides of the equation.
D. Because there are like terms (the constants) on opposite sides of the equation.
A. Because there are like terms (the variables) on the same side of the equation.
Combining like terms helps simplify the equation and make it easier to solve for the variable.