Solve for x:
−x+3(x−4)=5−21x
To solve the equation −x+3(x−4)=5−21x, follow these steps:
- **Step 1**: Distribute the 3 on the left side:
−x+3x−12=5−21x.
- **Step 2**: Combine like terms on the left:
(2x−12)=5−21x.
- **Step 3**: Add 21x to both sides to get only the variable terms on one side:
2x+21x−12=5.
- **Step 4**: Simplify by combining the x terms:
25x−12=5.
- **Step 5**: Add 12 to both sides to isolate terms with x:
25x=17.
- **Step 6**: Multiply both sides by 52 to solve for x:
x=17×52=534.
Therefore, the solution to the problem is x=534.