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If you were to solve the system using the addition method, what would you multiply the first equation by in order to make the x's add out of this system? -2x + 3y = 6 4x - 2y = 8

User Sean Shi
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1 Answer

5 votes
2 times 2=4
multiply first equation by 2 to get
-4x+6y=12
then add to get

-4x+6y=12
4x-2y=8 +
0x+4y=20

4y=20
y=5

sub back
-2x+3y=6
-2x+3(5)=6
-2x+15=6
-2x=-9
x=9/2=4.5


the number to multiply by is 2
User Lagistos
by
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