Question

Find the missing number so that the equation has infinitely many solutions.

4x + ? – 6x = – 2x – 9

Missing Number = ?

Answer 1

-9

Explanation:

let the missing number be "A"

4x+ A -6x = (-2x) -9

4x -6x + A = -2x - 9

-2x + A = -2x -9 (adding +2x on both sides)

2x -2x + A = 2x-2x -9

so we are left with,

A= -9