Question

simplify:[5-¹×3-¹]-¹ ÷6-¹​

Answer 1

$({5}^{ - 1} \times {3}^{ - 1})^{ - 1} \div {6}^{ - 1} \\ = ( \frac{1}{5} \times \frac{1}{3})^{ - 1} \div {6}^{ - 1} \\ = ( \frac{1}{15})^{ - 1} \div {6}^{ - 1} \\ = {15}^{1} \div {6}^{ - 1} \\ = {15}^{ 1} \div \:( \frac{1}{6})^{1} \\ = 15 \times 6 = 90$

Hope, it helps you

Answer 2

Answer:

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