SOLUTION: (-7)-� �(90)-� What is multiplicative inverse of this equation

Question 1067552: (-7)-� �(90)-�
What is multiplicative inverse of this equation
Answer by stuylin(8) (Show Source): You can put this solution on YOUR website!
the multiplicative inverse of a number is in other words, the reciprocal of the number. (the reciprocal of 2 is 1/2; the reciprocal of 1/9 is 9, etc.)
for this problem, first you have to solve the expression.
(-7)^-2 is the same as 1/(-7)^2, which is 1/49
(90)^-1 is the same as 1/(90)^1, which is 1/90
1/49 divided by 1/90 is the same as 1/49 multiplied by 90, so
the answer is 90/49.
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