exam Maths Puzzle Numerical Ability

Please help solve

Translate to an algebra statement:

Five times the difference of a number and one yields the same result as twice the same number increased by three.

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exam Other Question

sqrt20/5 - 1/sqrt5

Simplify.

Thank you!!!!
Need help in solving this it is not a test but for our homework. Every way I have worked it I get a different answer. 0.4p+0.2=4.2p-7.8-0.6p