9-steps Tutorial: X-sum: Another Approachable Puzzle that's all About X-Sums

Today's Puzzle:

Another in the 9-Step tutorials series from Azireo with laser focus on X-Sums.

Link to Play Along:

9-steps Tutorial: X-sum by Azireo http://tinyurl.com/SudokuSleuth9StepsXSums

Rules:

Normal sudoku rules.

Clues outside the grid indicate the sum of the first X digits in that row/column where X is the closest digit to the clue.