The number of times does Diego practice guitar each week is 13.
Given that,
Based on the above information, the calculation is as follows:
[tex]= (9 \frac{3}{4} ) \div \frac{3}{4} \\\\= (39\div 4) \div (3\div 4) \\\\= 39\div 4 \times 4\div 3 \\\\= 39\div 3[/tex]
= 13
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