SOLUTION: Elimination: How do you solve these two problems: r - 3p = 1 6r - p = 6 -2x + y = 3 x + 4y = 3

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: Elimination: How do you solve these two problems: r - 3p = 1 6r - p = 6 -2x + y = 3 x + 4y = 3      Log On


   

Question 122548: Elimination: How do you solve these two problems:
r - 3p = 1
6r - p = 6

-2x + y = 3
x + 4y = 3
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
r - 3p = 1
6r - p = 6
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r = 3p+1
Substitute to solve for "p":
6(3p+1)-p = 6
17p= 0
p = 0
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Substitute in r=3p+1 to solve for "r":
r = 3*0+1 = 1
=======================================
-2x + y = 3
x + 4y = 3
--------
y = 2x+3
Substitute to solve for "x":
x + 4(2x+3) = 3
x + 8x+12 = 3
9x = -9
x = -1
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Cheers,
Stan H.