exam Maths Puzzle Numerical Ability

_5_ - _8_ = 1
2x-3 3-2x

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exam Other Question

Can someone help me with this problem. I have to determine this is rational or irrational.

the negative symbol is alone to the left with the number 4 raised.
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-4√16
I believe this is irrational The width of a rectangle is 15 feet less than its length, and the perimeter is 210 feet. Find the width