Question

Find the missing number so that the equation has infinitely many solutions.
3(-x + 3) = -3x +?

Answer 1

Answer: 9

Step-by-step explanation: First, solve the left side. Using the distributive property, the left side would be -3x + 9. The right side is the same, but missing the 9. Adding the 9 will make the value of x not matter (essentially infinite solutions).