SOLUTION: 3p+2q=5 q-p=5 solve simultaneous equation algebraically

Algebra ->  Equations -> SOLUTION: 3p+2q=5 q-p=5 solve simultaneous equation algebraically       Log On


   

Question 1198091: 3p+2q=5
q-p=5
solve simultaneous equation algebraically
Found 3 solutions by josgarithmetic, MathTherapy, Alan3354:
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
How you mean "algebraically" is not clear.


You might use the system in both of these forms:

system%283p%2B2q=5%2C2p-2q=10%29
and
system%283p%2B2q=5%2C3p-3q=15%29


With those, quickly solve for each variable.

Answer by MathTherapy(10551) About Me  (Show Source):
You can put this solution on YOUR website!

3p+2q=5
q-p=5
solve simultaneous equation algebraically
Before you quickly solve this system, according to the other person - you need to check the system to see if it's
correct; or, you can quickly solve the system, and do a check. That will definitley prove then, that his solutions
are INCORRECT/WRONG/FALSE.

Therefore, cross%28system%283p%2B2q=5%2C2p-2q=10%29%29

and

cross%28system%283p%2B2q=5%2C3p-3q=15%29%29

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
3p+2q=5
q-p=5 ---> p-q = -5 x2 ---> 2p - 2q = -10
------------
2p - 2q = -10
3p + 2q = 5
--------------------- Add
5p = -5
p = -1
etc