Answer:
-5
Step-by-step explanation:
1: simplify both sides of the equation. (combine like terms)
2: subtract 3x from both sides
3: subtract 16 from both sides
4: divide both sides by 3
i hope that helped!
Use distributive method
5r - 50 = -51
Add 50
5r = -1
Divide by 5
r = -1/5
Ok i can help you solve this problem do you know the formula for quadratic equations