SOLUTION: solve systems of equations of numbers 1 to 10 by the addition or substraction 3x+2y=5 9x-2y=15

Question 135228: solve systems of equations of numbers 1 to 10 by the addition or substraction
3x+2y=5
9x-2y=15
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Solve by addition/subtraction:
1)
2) Add equation 1) to equation 2)
------------------
3) Divide both sides by 12.
3a) Simplify.
Now substitute this for x in equation 1).

Subtract 5 from both sides.
Divide both sides by 2.

The solution is: (,)
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