SOLUTION: Solve by rearranging the equations first. Then use the multiplication principle and then use the elimination method: 3x=8y+11 x+6y-8=0 How do I multiply each equation by to el

Algebra ->  Expressions-with-variables -> SOLUTION: Solve by rearranging the equations first. Then use the multiplication principle and then use the elimination method: 3x=8y+11 x+6y-8=0 How do I multiply each equation by to el      Log On


   



Question 377894: Solve by rearranging the equations first. Then use the multiplication principle and then use the elimination method:
3x=8y+11
x+6y-8=0
How do I multiply each equation by to eliminate x? What do I multiply equation #1 by? I thought I should multiply equation #2 by -3 to eliminate e? I know I have to rewrite the equations too. Please help. Thanks!

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Then use the multiplication principle and then use the elimination method:
3x=8y+11
x+6y-8=0
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Multiply the 2nd equation by -3 and rearrange the equations:
3x -8y = 11
-3x-18y = -24
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Add and solve for "y":
-26y = -13
y = 1/2
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Substitute for "y" and solve for "x":
x+6(1/2)-8 = 0
x + 3-8 = 0
x = 5
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Cheers,
Stan H.