Hello, thank you for taking the time to post your question!
First, you need to find the slope of the line that passes through the points (0, 10) and (12, 0).
m=(0 - 10) / (12 - 0) = -10 / 12 = -5/6
Since the line passes through the point (0, 10), the y-intercept is 10, meaning that in slope-intercept from the equation is y=−5/6x+10
Finally then to convert the equation to the standard form (Ax+By=C), you need to get rid of the fraction and move the terms around.
y=−5/6x+10
6y=−5x+60
5x+6y=60
I hope that helps you get moving in a better direction on this type of question! Feel free to reach out if you have any additional questions beyond that :)