How do you solve by substitution 3x + 2y = 6 and x + 2y = -6?
2 Answers
Jun 13, 2015
Explanation:
Try this:
Jun 13, 2015
Explanation:
To solve a system by substitution, you need to replace one unknown by a function of the other, using one of the equations.
Example:
becomes
Then, in the other equation, you replace
becomes
Now that you have the value of
becomes