You can put this solution on YOUR website!
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Two variables are involved in this set of two equations ... x and y. But the problem
already tells you that x is equal to -1. With this information you can solve for y by
substitution. Just substitute -1 for x in the top equation. When you do the top equation
becomes:
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This simplifies to:
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Eliminate the -2 on the left side by adding +2 to both sides to get:
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Solve for y by dividing both sides by 3. This results in:
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The decimal equivalent of this is:
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Hope this helps you to understand a way of solving the equation.
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