Rozwiąż 2 układy równań .
Układy w załączniku .
A.
5-(2x+3)=y
6y-3x=0
-2x+y=-2 /*(-6)
6y-3x=0 /*(-2)
-6y+12x=12
-------------
9x=12 /:9
x= 1 1/3
6y-3*1 1/3=0
6y=4 /:6
y=2/3
B.
2(x+4)=5y+1
5y-3=3x
2x+8=5y+1
5y-3x=3
-5y+2x=-7
------------
-x=-4 /*(-1)
x=4
5y-3*4=3
5y=15 /:3
y=5
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A.
5-(2x+3)=y
6y-3x=0
-2x+y=-2 /*(-6)
6y-3x=0 /*(-2)
-6y+12x=12
6y-3x=0
-------------
9x=12 /:9
x= 1 1/3
6y-3x=0
6y-3*1 1/3=0
6y=4 /:6
y=2/3
B.
2(x+4)=5y+1
5y-3=3x
2x+8=5y+1
5y-3x=3
-5y+2x=-7
5y-3x=3
------------
-x=-4 /*(-1)
x=4
5y-3x=3
5y-3*4=3
5y=15 /:3
y=5