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September 2, 2015
Posted by **Anon** on Friday, October 25, 2013 at 11:32am.

8x - 4y = 16

2x - y = 4

- Mathhh -
**PsyDAG**, Friday, October 25, 2013 at 11:43am2x - y = 4

Subtract 4 and add y to both sides of the above equation.

y = 2x -4

8x - 4y = 16

Substitute 2x-4 for y in last equation and solve for x. Insert that value into the first equation and solve for y. Check by inserting both values into the second equation.