SOLUTION: This question is very confusing. I don't even know where to start. 5x/2 - y = 9/10 3x/4 + 5y/6 = 2/3

Algebra ->  Expressions-with-variables -> SOLUTION: This question is very confusing. I don't even know where to start. 5x/2 - y = 9/10 3x/4 + 5y/6 = 2/3      Log On


   

Question 41432This question is from textbook
: This question is very confusing. I don't even know where to start.
5x/2 - y = 9/10
3x/4 + 5y/6 = 2/3 This question is from textbook

Answer by rajagopalan(174) About Me  (Show Source):
You can put this solution on YOUR website!
The steps are simple & easy.. see this
5x/2 - y = 9/10 ..eqn 1
3x/4 + 5y/6 = 2/3..eqn 2
multiply eqn 1 by 10
you get
25x-10y = 9 ..eqn 3
multiply eqn 2 by 12
9x+10y=8
now it is simple
25x-10y = 9
9x+10y=8
add both 34x=17 (y is eliminated)
x=1/2
then resub this in eqn 3
you get y=7/20
verify
5x/2-y=5/4-7/20=25/20 - 7/20=18/20=9/10
and
3x/4+5y/6=3/8+35/120=45/120+35/120=80/120=8/12=2/3
Cool