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6-61.

Use the substitution method:
4y − (−2y − 3) = 9

Combine like terms and solve. Then substitute the y value you found into the first equation and solve for x.

Use the elimination method. Solve for y and substitute the value into one of the equations.

x = 3 and y = 1

See problem (a) for help.

Use the eTools below to help solve the problems.

Click the link at right for the full version of the eTool: AC 6-61a HW eTool

Click the link at right for the full version of the eTool: AC 6-61b HW eTool

Click the link at right for the full version of the eTool: AC 6-61c HW eTool