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Solve the system of equations by the addition method

0 votes
-7x-y= -12  and 4x +y=6.
asked Mar 11, 2014 in ALGEBRA 2 by dkinz Apprentice

1 Answer

0 votes

Elimination method :

The system of equations are image.

Write the equations in column form and add the equations to eliminate y - variable.

image

The resultant equation is image.

Substitute the value of image in either of the original equations and solve for y.

The first equation: image.

image

image

image

image.

The solution image.

answered Mar 24, 2014 by dozey Mentor

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