exam Maths Puzzle Numerical Ability

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6/z-5 + 6/z+5

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exam Other Question

2x-2y+5=0 how do i solve this ? thanks! how do I figure this out?

Science and medicine. Ariana took 2 h longer to drive 360 mi on the first day of
a trip than she took to drive 270 mi on the second day. If her speed was the same on both days, what was the driving time each day?