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What are the solutions of the system 7x + 3y = -3 and y = -2 x ?
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What are the solutions of the system 7x + 3y = -3 and y = -2 x ?

User Ricardo Pardini
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1 Answer

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7x+3y=-3\\ y=-2x\\ So \\ 7x+3(-2x)=-3

7x-6x=-3⇔
x=-3\\ y=-2x=6\\ So\ (x,y)=(-3,6).
User Vadzim Savenok
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