Answer:
x= -1
Step-by-step explanation:
First add 2x to the 7x it will look like this
9=9x
Now you need x by itself so divide 9 on both sides it will look like this
1=x and thats your answer just swap the x and the 1
Rocky because of the product rule which says that when multiplying two terms with the same base you add the exponents.
It’s C. It just need the 1 over lapping of each other
Answer:
Step-by-step explanation:
To create an augmented matrix, we need to transfer the coefficients of each system of equations into its respective place in the matrix. The first row will be the coefficients of the first equation and so on. The number to the right of the equals sign is the last column of the augmented matrix.
![\left[\begin{array}{ccc|c}1&-1&8&8\\3&-9&1&-1\\8&1&0&0\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7Cc%7D1%26-1%268%268%5C%5C3%26-9%261%26-1%5C%5C8%261%260%260%5Cend%7Barray%7D%5Cright%5D)
Answer:
Step-by-step explanation: