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use the elimination method to solve the system of equations. x+8y=20 -x+5y=6
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Do you see that if you add the two equations, x will be eliminated?
13y=26 @ybarrap
yes
Now divide both sides by 13
2
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yes, that's right
y=2
ok
Now take the first equation and replace y with 2 and solve for x
x+8(2)=20... x+16=20 so is it 4
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@ybarrap
yes, that is perfect
Be sure to test your solutions.
so 1,4 r the solution set
@ybarrap
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2,4
actually 4,2
I just tested and made the correction, you should test also
how
@ybarrap
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plug your solutions into the 1st equation, you will see if they are right or not. you can also use the second equation, whichever you prefer, use both in this case since it's not that hard
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