Answer:
Explanation:
To simplify the expression 5x + 7x, we can combine like terms. In this case, the like terms are the ones with the same variable, which is x. Step 1: Start by adding the coefficients (numbers in front of the variable) of the like terms. In this case, we add 5 and 7: 5x + 7x = 12x Step 2: Since the variable remains the same (x), we can simply write the sum of the coefficients (12) in front of the variable: 5x + 7x = 12x So, the simplified expression for 5x + 7x is 12x.