You can put this solution on YOUR website! Lets name the equation
2x-y=4 ----------- 1
6x+3y=-18 ----------- 2
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From equation 1
y=2x-4 ----------- 3
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Subsititue equation 3 into equation 2
6x+3(2x-4)=-18
6x+6x-12=-18
12x=-6
x=
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Subsititue x into equation 3
y=
=-1-4
=-5
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Good Luck, By: Mathnoob
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