Respuesta :
3x - 4 = 9x - 21
Subtract 9x from both sides.
3x - 9x - 4 = -21
Add 4 to both sides.
3x - 9x = -21 + 4
Simplify.
-6x = -17
Divide both sides by -6.
x = 17/6 AND 2 5/6
~Hope I helped!~
Subtract 9x from both sides.
3x - 9x - 4 = -21
Add 4 to both sides.
3x - 9x = -21 + 4
Simplify.
-6x = -17
Divide both sides by -6.
x = 17/6 AND 2 5/6
~Hope I helped!~