SOLUTION: Solve each question by the by the addition method 1) 3x+2y=3 4x-3y=-13 2)3x-y=5 -6x+2y=1

Question 149122: Solve each question by the by the addition method
1) 3x+2y=3
4x-3y=-13

2)3x-y=5
-6x+2y=1
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
1) 3x+2y=3 MULTIPLY THIS EQUATION BY 3
4x-3y=-13 MULTIPLY THIS EQUATION BY 2 & THEN ADD THEM.
9X+6Y=9
8X-6Y=-26
--------------------------------
17X=-17
X=-17/17
X=-1 ANSWER.
3*-1+2Y=3
-3+2Y=3
2Y=3+3
2Y=6
Y=6/2
Y=3 ANSWER.
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2)3x-y=5 MULTIPLY BY 2 & ADD.
-6x+2y=1
6X-2Y=10
----------------------------------
0+0=11 THERE ARE NO SOLUTIONS FOR THESE 2 EQUATIONS. THESE EQUATIONS REPRESENT PARALLEL LINES IN GEOMETRY.

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