B is the answer hope it helps
Step One: Line Up All the Digits. First, line up all of the numbers according to their place value.
Step Two: Multiply by the Ones Digit. ...
Step Three: Add a Zero Place Holder. ...
Step Four: Multiply by the Tens Digit. ...
Step Five: Add the Two Answer Rows Together.
Answer:
you have to add similar elements
-4x-10x=-14x
Mark me brainliest if it helped
56km/h is the answer to Question 9
1.5 hours is the answer to Question 10
Leave a comment if you'd like a step-by-step explanation