exam Maths Puzzle Numerical Ability

hi,
can you please help me with this? find the numerator for the x variable when using cramer's rule to solve x-3y=8 and 2x+2y=8. thank you!!

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exam Other Question

An express train travels 80 kilometers per hour from Ironton to Wildwood. A local train,traveling at 48 kilometers per hour, takes 2 hours longer for the same trip. How far apart are Ironton and Wildwood? Solve.
8x - (5x+4)=5

The solution is x = ??

HELP