1,2, and 3 is the correct answer.
After combining like terms and simplifying
we get 
Step-by-step explanation:
We need to combine like terms to simplify the expression:

Like terms: The terms are like when they have same variable and same exponent.
Solving:

So, After combining like terms and simplifying
we get 
Keywords: Solving Expressions
Learn more about Solving Expressions at:
#learnwithBrainly
Answer:
3,915 mi
Step-by-step explanation:
Answer:
The augmented matrix for the system of equations is
.
Step-by-step explanation:
This system consists in three equations with three variables (
,
,
).The augmented matrix of a system of equations is formed by the coefficients and constants of the system of linear equations. In this case, we conclude that the system of equations has the following matrix:
![\left[\begin{array}{cccc}0&2&-3&1\\7&0&5&8\\4&1&-3&6\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bcccc%7D0%262%26-3%261%5C%5C7%260%265%268%5C%5C4%261%26-3%266%5Cend%7Barray%7D%5Cright%5D)
The augmented matrix for the system of equations is
.
If the question is y = blank(x) + blank (I can’t see the left of the equation
Then the answer is y = 2x + -4