Question 14252
You can let x = the number of math problems on Tim's homework assignment.

You can set up the equation as follows:

{{{(2/3)x = 12}}} Solve for x by multiplying both sides by the multiplicative inverse of 2/3, which is 3/2

{{{x = 12(3/2)}}}
{{{x = 18}}}

Tim had 18 problems on his math homework assignment.