Układy równań. PROSZE O CAŁE ROZWIĄZANIA METODĄ PODSTAWIANIA
1.
x+y=3
x-y=5
2.
9x-3y=6
6x+y=-2
3.
2x-y=0
4x+3=y
1.x=3-y
3-y-y=5
3-2y=5
-2y=5-3/(-2)
y=-2,5+1,5
y=-1
x=4
2.9x=6+3y/9
x=0,7+0,3y
4,2+1,8+y=-2
y=-2-4,2-1,8
3.2x=y/2
x=y/2
4*y/2+3=y
4y/2+3=y
NIE WIEM CZY TO BEDZIE DOBRZE
1.x=3-y 3-y-y=5,x=3-y -2y=5-3,x=3-y y= 2/-2,x=3-y y=-1,x=3-(-1) y=-1,x=4 y=-1 2.9x-3y=6 y=-2-6x,9x-3(-2-6x) y=-2-6x,9x+6+18x y=-2-6x,27x+6 y=-2-6x,x=-27/6 y=-2-6x,x=-4 1/3 y=-2-6x,x=-4 1/3 y=-2-6(-4 1/3),x=-4 1/3 y=-2-6(-13/3),x=-4 1/3 y=-2-78/3,x=-4 1/3 y=-2-26,x=-4 1/3 y=-28 3.2x-y=0 y=3+4x,2x-3+4x y=3+4x,6x=3/6 y=3+4x,x=1/3 y=3+4x,x=1/3 y=3+4*1/3,x=1/3 y=3+4/3,x=1/3 y=3 4/3
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1.x=3-y
3-y-y=5
3-2y=5
-2y=5-3/(-2)
y=-2,5+1,5
y=-1
x=4
2.9x=6+3y/9
x=0,7+0,3y
4,2+1,8+y=-2
y=-2-4,2-1,8
3.2x=y/2
x=y/2
4*y/2+3=y
4y/2+3=y
NIE WIEM CZY TO BEDZIE DOBRZE
1.x=3-y 3-y-y=5,x=3-y -2y=5-3,x=3-y y= 2/-2,x=3-y y=-1,x=3-(-1) y=-1,x=4 y=-1 2.9x-3y=6 y=-2-6x,9x-3(-2-6x) y=-2-6x,9x+6+18x y=-2-6x,27x+6 y=-2-6x,x=-27/6 y=-2-6x,x=-4 1/3 y=-2-6x,x=-4 1/3 y=-2-6(-4 1/3),x=-4 1/3 y=-2-6(-13/3),x=-4 1/3 y=-2-78/3,x=-4 1/3 y=-2-26,x=-4 1/3 y=-28 3.2x-y=0 y=3+4x,2x-3+4x y=3+4x,6x=3/6 y=3+4x,x=1/3 y=3+4x,x=1/3 y=3+4*1/3,x=1/3 y=3+4/3,x=1/3 y=3 4/3