6( 5-8x) +12= -54
i need i didn't understand this problem it's really hard to solve it doesn't make sense to me ?

6( 5-8x) +12= -54 
30-48x+12=-54 this comes from distributing(multiplying) 6x5 and 6 times -8x
30+12-48x=-54 you have to add the coefficients 30+12
42-48x=-54  
-42        -42 

-48x=-96 divide by -48
x=2

You use the distributive property by distributing the 6 to 5 and -8x which gives you 30-48x+12=-54 then you subtract 30 and 12 from both sides to get -96 then divide by -48 to solve for x which gives you 2

2160ft^3 i think you could use a formala to you out with this in the future