| my point is, the one i stated is a very helpful strategy, to me at least. i know when to use it, it just comes naturally lol.. graphing sucks, u hav to wait for the graph to show,type in equation, and press numerous buttons, time-consuming. no good
anyway my point is u can apply that to any of the 'solve for x' questions.
reading the question correctly, knowing what the problem wants, it works with 100% accuracy for me.
let me give u an example of simple SAT math problems, that require u to use those gay ways to solve.
i remember the ester problem, that 2 way equal distance,diff rates and time.
lets say x/30+x/45=1
i believe that was the right numbers. dist/spd + dist/spd=1 hr
OK, when i see this type of problem, i go straight to my TI, i move everything to the right
x/30+x/45=1 -> 0=1-x/45-x/30, then u solve for x; like i said, this type of problem only takes about 10 seconds to find the right answer, idk if its gona work for u guys. but i developed it personally, so im very adept at it=p
same thing works for other things do some cross multiplying(many variables,but same variable.)
move everything to 1 side, equal 0, solve. |