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Graphing Method:
Simply graph the equation on the calculator and find where the two graphs intersect.
Addition Method:
Let's take two equations:
2x-3y=3
-x+4y=1
Multiply the second equation by 2.
2x-3y=3
-2x+8y=2
Add the equations.
5y=5 » y=1
Substitute 1 in the first equation for y and solve for x.
2x-3=3 » 2x=6 » x=3
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2x
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