book Maths Puzzle Numerical Ability

I do not understand how to do any of this. can u try and teach me or at least show me?

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To be a Registered nurse, do you have to know math very well? Sets, Inequalities, and Interval Notation

2/3(7/8-4x)- 5/8<3/8
My first approach to this problem is to multiply the entire equation by 24/1 and I did but I am confused about th