
Nathan B. answered 08/22/18
Tutor
5
(20)
Elementary and Algebraic skilled
Here's the breakdown:
Sean's marks = m
Emma's marks = 94
Sean's marks plus another 15 = Emma's marks
That's as far as I'm going to spell it out. Place the proper values into that final statement to form the proper equation. All you would need to do to solve is isolate m, and you would do that by subtracting 15 from both sides.