PLZ PLZ PLZ! Someone Solve this Question

-1/m^3

Step-by-step explanation:

m-3n/6m^3n - m+3n/6mn^3

=(m-3n)-(m+3n)/6m^3n  [6m^3n is the L.C.M]

=m-3n-m-3n/6m^3n

=-6n/6m^3n

= -1/m^3

   (Ans)

21.4 i did it already for s1

step-by-step explanation:

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

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step-by-step explanation: