Liter is not equivalent to one of the metric units
Put x=5 in above function. J(x)= 39x. J(5) = 39x5 = 195.
The greatest common factor of the expressions 60x and 84 is 12 because it can divide both 60 and 84 giving us the answer of 5 and 7, respectively. Factoring out 12 from the terms of the given expression will give us the answer of,
60x - 84 = 12(5x - 7)
4/3 = 320/x
4x = 320*3
4x = 960
x = 240
Check:
320/240 divide both by 80
= 4/3 :)
