26 will be my guess....considering the fact that you have 7 groups of 3 ...7x3= 21....you have 5 left over. 21+5 = 26

The problem would be set up 7 * 3 + 5. This is because you need seven groups of three and there are five more. Therefor, the answer is 26.

Draw a picture of what you did

26 is the answer. 7 groups *3 and 5 are left over i.e 21+5 = 26