Understanding and Solving the Equation 2x + 3 = 9

In South Africa, Grade 7 students often encounter equations like 2x + 3 = 9 in their math curriculum. To solve for x, we can start by isolating the variable. [ 2x + 3 - 3 = 9 - 3 ] This simplifies to [ 2x = 6 ] Finally, we divide both sides by 2 to solve for x: [ \frac{2x}{2} = \frac{6}{2} ] So, x = 3. Hence, the solution to the equation 2x + 3 = 9 is x = 3. This foundational understanding of algebra sets the stage for more complex problem-solving skills in higher grades.