Rozwiąż układy równań.
{5x - 1 = 3y
{1,6y - 2 = 4 - 2x
{-x -y = 2
{2(3x + y) = - 20
{4x + 3y = 54
{1/3x = 4(1 + 1/8y)
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5x-1=3y
1,6y-2=4-2x
5x-3y=1/*2
2x+1,6=6/*(-5)
10x-6y=2
-10x-8y=-30
-14y=-28/:(-14)
y=2
10x-6*2=2
10x=14
x=1,4
-x-y=2
2(3x+y)=-20
-x-y=2/*6
6x+2y=-20
-6x-6y=12
6x+2y=-20
-4y=-8/:(-4)
y=2
6x+2*2=-20
6x=-16/:6
x=2 i 2/3
4x+3y=54
1/3x=4(1+1/8y)
4x+3y=54
1/3x=4+1/4y
4x+3y=54
1/3x-1/4y=4/*(-12)
4x+3y=54
-4x+3y=-48
6y=6/:6
y=1
4x+3=54
4x=51/:4
x=12 i 3/4
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