book Maths Puzzle Numerical Ability

Michaels bank contains only nickels dimes and quarters. There are 63 coins in all, valued at 5.45. The number of nickels is 1 short of being 3 times the sum of the number of dimes

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Can you help me solve this for me?
Finding the measures of angles.
Two lines that are parallel, a line going diagonal thru them.
(a) on one side in the corner and (b) on graph the solution set

x>4
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