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5w -3 = 3w + 15 

Need to get the numbers on one side, and letters on the other side.

5w = 3w + 15 + 3 

5w - 3w = 15 + 3

2w = 18

w = 18/2

w = 9

Answer is 8.30am Using the speed = distance/time reference the student would do distance/speed or 5/10 = 0.5 hours

Whenever you have to solve an equation, you must always follow BIDMAS. This means that you should always start with expanding any Brackets, then look at any Indices, then Division, Multiplication, Additio...