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timurjin [86]
3 years ago
15

3x+3=3y 2x-6y=2 (Solving Systems Of Linear Equations By Elimination)

Mathematics
1 answer:
Sergio [31]3 years ago
8 0
3x+3=3y ⇒ 3y-3x=3 ⇒3(y-x)=3 ⇒ y-x=1
2x-6y=2 ⇒ 2(x-3y)=2 ⇒ x-3y=1

We must to collect two equations.
x's is lost;
y-3y=2
-2y=2
y=-1   ; x-3.(-1)=1  
⇒ x=-2

Answer is (-2,-1)

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