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Helpppp please whit both a and b

Helpppp please whit both a and b-example-1
User Amitshree
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a. \: - 13 - 8 * {2}^(2) = - 13 - 8 * 4 = - 13 - 32 = - 45 \\ b. \: (6 * 3)/(2) / 7 = (18)/(2) / 7 = 9 / 7 \approx 1.28571

User Jubal
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