a) kalmerka : x + 2y = -2 2x - y = 1b) klamerka : x - 2y = 3 -2x + y = 0Proszę o najszybsze rozwiązanie! Dam naj!
b)
x-2y=3/*2
-2x+y=0
2x-4y=6
--------------
3y=6/ :3
y=2
2x-4*2=6
2x=6+8
2x=14/ :2
x=7
a)
x+2y=3
-2x-y=0
x=3-2y
-2(3-2y)-y=0
-6+4y-y=0
4y-y=0+6
3y=6/3
x=3-2*2
y=1,2
x=3-4
x=-1
x-2y=3
x=3+2y
-2(3+2y)+y=0
-6-4y+y=0
-3y=6/(-3)
y=-2
x=3+2*(-2)
liczę na najj ;)
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b)
x-2y=3/*2
-2x+y=0
2x-4y=6
-2x+y=0
--------------
3y=6/ :3
y=2
y=2
2x-4y=6
y=2
2x-4*2=6
y=2
2x=6+8
y=2
2x=14/ :2
y=2
x=7
a)
x+2y=3
-2x-y=0
x=3-2y
-2(3-2y)-y=0
x=3-2y
-6+4y-y=0
x=3-2y
4y-y=0+6
x=3-2y
3y=6/3
x=3-2y
y=2
x=3-2*2
y=1,2
x=3-4
y=2
x=-1
y=2
b)
x-2y=3
-2x+y=0
x=3+2y
-2(3+2y)+y=0
x=3+2y
-6-4y+y=0
x=3+2y
-3y=6/(-3)
x=3+2y
y=-2
x=3+2*(-2)
y=-2
x=-1
y=-2
liczę na najj ;)