Answer: 4 2/7 or if they want improper 30/7
Explanation:
-2(x + 13) + 9x = 4
Distribute the -2 to the parentheses
-2x - 26 + 9x = 4
Combine like terms
7x - 26 = 4
Add 26 to both sides to get x by itself
7x = 30
Divide by 7 to get x by itself.
x = 30/7
Mixed = 4 2/7 normal = 30/7