8. Evaluate 2•3-1 + 3•2-1 using the laws of exponents
[tex]a. \: \frac{ -5}{6} [/tex]
[tex]b. \: 1[/tex]
[tex]c. \: \frac{13}{6} [/tex]
[tex]d. \: \frac{9}{4} [/tex]
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