Question

2 PointsSimplify 4.2a+3.5b-3.1a.​

Answer 1

Answer: 1.1a +3.5b

Step-by-step explanation: You can combine the a’s because they are the same variable. 3.1a has a subtraction sign in front of it so when you combine it with 4.2a you’re actually subtract once 3.1 from 4.2 :)

Answer 2

1.1a+3.5b is your answer because 3.1a minus 4.2a is 1.1a and you don't do anything to the 3.5b because that is the only b