4x-3y=-2
4x+2y=3 /*-1
-4x-2y=-3
---------------------
-4x+4x-3y-2y=-2-3
-5y=-5
y=1
4x-3=-2 /+3
4x=1 /:4
x=0,25
b)
x-2y=3/4 /*-1
2x-2y=1,75
-x+2y=-0,75
-----------------
2x-x+2y-2y=1,75-0,75
x=1
2-2y=1,75 /-2
-2y=-0,25 /:-2
y=0,125
a.
4x-3y=-2 /*1
4x+2y=3 /*(-1)
-5y=-5 /: (-5)
4x+2y=3
4x+2=3
x=1/4=0,25
b.
x-2y=3/4
x-2y=0,75 /*2
2x-2y=1,75 /* (-1)
2x-4y=1,5
-2x+2y=-1,75
-2y=-0,25 /: (-2)
x=-0,125
-0,25-4y=1,5
-4y=1,75 /: (-4)
y=7/16
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4x-3y=-2
4x+2y=3 /*-1
4x-3y=-2
-4x-2y=-3
---------------------
-4x+4x-3y-2y=-2-3
-5y=-5
y=1
y=1
4x-3=-2 /+3
y=1
4x=1 /:4
y=1
x=0,25
b)
x-2y=3/4 /*-1
2x-2y=1,75
-x+2y=-0,75
2x-2y=1,75
-----------------
2x-x+2y-2y=1,75-0,75
x=1
x=1
2-2y=1,75 /-2
x=1
-2y=-0,25 /:-2
x=1
y=0,125
a.
4x-3y=-2 /*1
4x+2y=3 /*(-1)
4x-3y=-2
-4x-2y=-3
-5y=-5 /: (-5)
y=1
4x+2y=3
4x+2=3
4x=1 /:4
x=1/4=0,25
x=0,25
y=1
b.
x-2y=3/4
2x-2y=1,75
x-2y=0,75 /*2
2x-2y=1,75 /* (-1)
2x-4y=1,5
-2x+2y=-1,75
-2y=-0,25 /: (-2)
x=-0,125
2x-4y=1,5
-0,25-4y=1,5
-4y=1,75 /: (-4)
y=7/16
x=-0,125
y=7/16