13. what is the result of adding 5.4a + 7.1 and -1.28 - 6.3?
a. 6.6a + 0.8
b. 6.6 - 0.8
c. 4.2a + 0.8
d. 4.2a - 0.8
what’s the answer

C. 4.2a + 0.8

Step-by-step explanation:

Given:

The two binomials given for addition are:

and

Now, adding both the binomials, we get:

Distributing the positive sign inside the second binomial, we get:

Now, combining like terms using the commutative property of addition, we get:

Simplifying the above expression, we get:

Therefore, the resulting addition of the given binomials is

Hence, option C is the correct answer.

fourth month

step-by-step explanation:

it is the one with the most keychains.

the answer is c

step-by-step explanation: