Answer :
x - the number
6 · x = (-3) · x + 45
6x = -3x + 45 |add 3x to both sides
9x = 45 |divide both sides by 9
x = 5
6 · x = (-3) · x + 45
6x = -3x + 45 |add 3x to both sides
9x = 45 |divide both sides by 9
x = 5