how do you solve for 2/3 * ? = 20
Your problem is asking what 2/3 times an unknown number equals 20.
Divide both sides of the equation by 2/3.
2/3 * ? = 20
2/3 divided by 2/3 * ? = 20 divided by 2/3
? = 20 divided by 2/3
? = 30
You can prove that by substituting 30 for ?.
2/3 * 30 = 20