First Triangle - 286,389,334 Second Triangle - 126,317,292 Third Triangle - 169,364,440 Fourth Triangle - 9,12,11

Place the numbers 1 - 12 in the twelve circles below so the sum of each side of the triangle is 36. I will give you a head start by placing some of the numbers for you. (The numbers may be used once only).

Fill numbers from 1 to 9 so that every row , column and diagonally add up to 15 .You can use no. 1 to 9 only once.

Fill the blanks and complete the addition using the provided digits. All digits should be used?