SOS!!
x + y = 6
x - y = 8
Solve the system of equations.
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OpenStudy (solomonzelman):
Can you see that y is a negative number ?
OpenStudy (acxbox22):
add the 2 equations, eliminating the y
solve for x
plug x value into any equation to get y value
OpenStudy (solomonzelman):
7+(-1)=6
7-(-1)=8
OpenStudy (solomonzelman):
pure logic ;)
OpenStudy (texaschic101):
just add them and you will see that the y's cancel out...and just solve for x. Once x is found, sub that back into either equation and solve for y
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OpenStudy (anonymous):
Don't be sassy Soloman
OpenStudy (texaschic101):
lol
OpenStudy (anonymous):
I tried, I need the answer because mine are wrong!
OpenStudy (acxbox22):
@SolomonZelman gave you the answer
OpenStudy (acxbox22):
look at the 3rd post in this thread
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OpenStudy (texaschic101):
x + y = 6
x - y = 8
-----------add
2x = 14
x = 7
now sub 7 in for x in either equation to find y
x + y = 6
7 + y = 6
y = 6 - 7
y = -1
check..
x - y = 8
7 - (-1) = 8
7 + 1 = 8
8 = 8 (correct)
x = 7 and y = -1
any questions ?