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OpenStudy (anonymous):
i need a little help . . Solve for elimination -4x-9y=-2 -9x-18y=0
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sam (.sam.):
-4x-9y=-2 times 2 -9x-18y=0 -------------------- -8x-18y=-4 -9x-18y=0 x =-4 -------------------- -9x-18y=0 y=-2
Parth (parthkohli):
1) Multiply the top equation(both sides) by 2 2) Add both equations. 3) Solve for x. 4) Substitute the value of x to find the the value of y.
OpenStudy (anonymous):
thanks so much . saved my life ^__^
sam (.sam.):
yw
OpenStudy (callisto):
Wait... y is 2 ... not -2
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OpenStudy (callisto):
-9x-18y=0 -9(-4)-18y=0 -18y = -36 y=2 ....
OpenStudy (anonymous):
ok , thanks for finalizing that .
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