it the temperature is -2 and rises by 15 you do -2+ 15 to get 13
Subtract 6 from both sides, you get 1/3x=-14
Now multiply both sides by there, hence x=-42
2/5 is the answer because you have to divided by 2 both
Can you list this in numbers or take a picture of the written equation. I can't read what you put.
