A17.8 Solving Systems of Equations by Elimination

[TheyCallMejmar]

im pretty sure im ready for this test thanks!

[machoskiller]

Mr. Trent Tormoehlen...i think thts how its spelled...

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[ttor68]

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[123456bibikun]

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[KansasCityKing1962]

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I finally found out this nonense.

[shadeexx]

what if you have an equation that STILL has both x and a y

for example 5x-2y=-15 and 2x-2y=-15

[blingazzizi]

you would want to combine the equations together to eliminate one of the variables: (1)=> 5x-2y=-15 (2)=>2x-2y=-15

first multiply eq (1) by -1=> -5x+2y=15 then add that to eq (2) you would end up with (-5x+2x)+(2y-2y)=0; or -3x=0, therefore x=0. you then substitute 0 in for x in eq (1)=> 5(0)-2y=-15; or y=-15/-2, therefore y=7.5

[ibme4life]

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[TheAnimeLoverForever]

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[AfgForLyfe01]

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[JetsToReason]

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[thurybab]

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[limametro]

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[gdfgdgfhfgh]

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[narutooftheblade]

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