can you rewrite the equation a bit neater please.
because what im getting from it is:
do i need to subract the negative .8x from the .5x or the other way around
or do i need to subract 68 from 80 and get 12
but after i geat 12 i will need to divide by -.30x and my answer will be negative for my problem and it wont make any sense
apreciate any help