If you wanted to eliminate the y variable by adding the two equations in the following system, what could be your first step?

2x − 4y = 6
3x − y = 12

Add the two equations together

Multiply the first equation by −4

Multiply the second equation by −4

Multiply the second equation by 4

Question

If you wanted to eliminate the y variable by adding the two equations in the following system, what could be your first step?

2x − 4y = 6
3x − y = 12

 Add the two equations together

 Multiply the first equation by −4

 Multiply the second equation by −4

 Multiply the second equation by 4

eyust707 · Answer

Now this one is different

eyust707 · Answer

it uses the elimination method

eyust707 · Answer

with this method we need the y's to have the smae number in front of them

eyust707 · Answer

expect one y needs a -4 in front and one y needs a +4 in front

eyust707 · Answer

that way we can eliminate them

eyust707 · Answer

what would we want to do to make the first equation have a -4y and the second equation have a +4y

anonymous · Answer

so how do we change the -y to 4y ?

eyust707 · Answer

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