The multiplicative inverse is 107/8
Multiplicative inverse
Given the expression 1/6 ÷ 1/81 +-1/8
This can be further expressed as:
= 1/6 ÷ 1/81 +-1/8
= 1/6 × 81/1 - 1/8
= 81/6 - 1/8
Take the difference in the fractions
= 4(81)-3(1)/24
= 324-3/24
= 321/24
The multiplicative inverse is the value needed to multiply with 321/24 to give 1.
The multiplicative inverse is 107/8
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