book Maths Puzzle Numerical Ability

7x-8=3x+12

can you help me find x

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book Other Question

How do I handle the 1/2 power???

(3x-5)^1/2=2

Find real solution.

Thanks Caroline Please help me (and explain the breakdown steps alon the way please)solve this (The chart may not come through, so I'll do my best to explain it. Thank you.

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