Question

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Sistema 5X+2Y=3+4Y
4X-3Y+1=X-Y

Answer 1

5x+2y-4y=3
5x-2y=3
4x-x-3y+y=-1
3x-2y=-1

5x-2y=3
3x-2y=-1(x-1)
5x-2y=3
-3x+2y=1(cancela -2y com +2y)
2x=4
x=4/2
x=2

5(2)-2y=3
10-2y=3
-2y=3-10
-2y=-7
y=-7/-2
y=7/2