Zahra wants the equation below to have an infinite number of solutions when the missing number is placed in the box.

Answer:box contains - 3Step-by-step explanation:a(x - 3) + 2x = -(x - 5) +4              Remove the brackets on both sidesax - 3a + 2x = -x + 5   + 4             Subtract 2x from both sides.ax - 3a + 2x - 2x = -x - 2x + 9ax - 3a = - 3x + 9ax - 3(-3) = - 3x + 9ax + 9 = - 3x + 9Now if you make a = -3 then both sides with have - 3 for the x coefficient. Any number could be put in for x and it will make the answer on both sides equal. Notice you could subtract 9 from both sides and it will not change the condition of the problem.