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3x-2y=8
2x=14-3y/:2
3x-2y=8
x=7-1,5y
3*(7-1,5y)-2y=8
x=7-1,5y
21-4,5y-2y=8
x=7-1,5y
-6,5y=-13/:(-6,5)
x=7-1,5y
y=2
x=7-1,5*2
y=2
x=7-3
y=2
x=4
y=2
1/2x-3/4y=0
2/3x+1 1/4y=9
1/2x=3/4y /:1/2
2/3x+1 1/4y=9
x=1 1/2y
2/3*1 1/2y+1 1/4y=9
x=1 1/2y
2 1/4y=9/:1 1/4
x=1 1/2y
y=7 1/5
x=1 1/2 * 7 1/5
y=7 1/5
x=10 4/5
y=7 1/5
1/2x-2y=8
2x+5y=6
1/2x=8+2y/:1/2
2x+5y=6
x=4+y
2*(4+y)+5y=6
x=4+y
8+2y+5y=6
x=4+y
7y=-2/:7
x=4+y
y=-2/7
x=4-2/7
y=-2/7
x=3 5/7
y=-2/7