A display has 6 packs of marbles with a total mass of 629g. The packaging of each pack has a mass of 2/3g and each marble has a mass of 4 1/2g, Which equation can we use to determine m, the number of marbles per pack?

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8

it would be 4 over -2 divided by -1 over 3.

if you want a solution it would be 4

you flip it so it would be 4/-2 divided by 3/-1 then it would be 12/3 and you would simplify it to 4