book Maths Puzzle Numerical Ability

please help me with this.

x/4 -3x/2= -1/2

will you show me how you did it?

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book Other Question

|2x| > x


It seems that the varible's occuring twice in an absolute value inequality is throwing me off and I need a little help. It's ok if the answer is provided as well as t
Solve the proportion please:

5/6 = a-2/4