Posted by **Edith** on Saturday, February 11, 2012 at 12:36pm.

How do I solve this using substitution method?

7x+9y=-38

-6x+y=50

- Math -
**Steve**, Saturday, February 11, 2012 at 5:15pm
solve either equation for x or y and substitute it into the other equation:

-6x+y = 50

y = 6x+50

so,

7x+9(6x+50) = -38

7x + 54x + 450 = -38

61x = -488

x = -8

now, use that value in either equation to get y:

y = 6(-8) + 50 = 2

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