The equations of linear system are where
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Since the coefficient of the x - term in the above two equations is same, eliminate these terms by subtracting the equations.
\Write the equations in column form and subtract to eliminate variable x.
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The resultant equation is and solve it for y.
Divide each side by 5.
\Cancel common terms.
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Substitute the value of in equation 2:
and solve for x.
Add 6 to each side.
\Divide each side by a.
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The solution is .