exam Maths Puzzle Numerical Ability

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?

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Hi! Could someone please help me with this problem.
Let x=4,y=-3 and z=2

xy^2-3z^2
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(xy)^2(-3z)^2 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!!