Question 500768
2x +7y = -7
-4x -3y = -19
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multiply the first equation by 2
then add
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4x +14y = -14
-4x -3y = -19
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0x +11y = -33
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11y = -33
y = -3
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substitute to find 'x'
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2x + 7(-3) = -7
2x -21 = -7
2x = 14
x = 7
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Always check your answer.
Substitute into the other equation.
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-4(7) -3(-3) = ??
-28 + 9 = -19
Correct.
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Answer: (7,-3)
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If you were to graph these equations, they would intersect there.
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Graph
{{{graph(500,500,-10,10,-10,10,-2/7*x-1,-4/3*x+19/3)}}}