Answer:
x=84/25
Step-by-step explanation:
4/7=12/x -3
1. Add 3 to both sides of the equation
4/7+3=12/x- 3+3
2. Simplify
25/7=12/x
3. Multiply all terms by the same value
x . 25/7 =x . 12/x
4. Simplify
25x/7=12
5. Multiply all terms by the same value
7 . 25x/7= 7 . 12
Solution: x=84/25
