exam Maths Puzzle Numerical Ability

Hi,

I need help how would I solve the following Linear Equations and their Solutions

3x/4 = 6

I do appreciate your help, I just so confussed.

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Graph this equation 3 ways 2x+3y=1 A student makes a $9.25 purchase at a bookstore with a $20 bill. The store has no bills and only quarters and fifty cent pieces for change. There are 30 coins total given back to t