oblicz metodą podstawiania a) 2x-y=3 4x+2y=10
2x-y=34x+2y=10
-y=3-2x /*[-1]4x+2y=10
y= -3+2x4x+2[-3+2x]=10
y= -3+2x4x-6+4x=10
y= -3+2x4x+4x=10+6
y= -3+2x8x=16 /:8
y= -3+2xx=2
y= -3+2*2x=2
y=-3+4x=2
y= 1x=2spr.2*2-1=4-1=34*2+2*1=8+2=10
2x-y=3
4x+2y=10
-y = - 2x+ 3
y = 2x - 3
4x + 2 * ( 2x -3) = 10
4x + 4x - 6 =10
8x = 16/:8
x = 2
y = 2 * 2 -3
y= 4 -3
y = 1
x=2
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2x-y=3
4x+2y=10
-y=3-2x /*[-1]
4x+2y=10
y= -3+2x
4x+2[-3+2x]=10
y= -3+2x
4x-6+4x=10
y= -3+2x
4x+4x=10+6
y= -3+2x
8x=16 /:8
y= -3+2x
x=2
y= -3+2*2
x=2
y=-3+4
x=2
y= 1
x=2
spr.
2*2-1=4-1=3
4*2+2*1=8+2=10
2x-y=3
4x+2y=10
-y = - 2x+ 3
4x+2y=10
y = 2x - 3
4x+2y=10
y = 2x - 3
4x + 2 * ( 2x -3) = 10
y = 2x - 3
4x + 4x - 6 =10
y = 2x - 3
8x = 16/:8
y = 2x - 3
x = 2
y = 2 * 2 -3
x = 2
y= 4 -3
x = 2
y = 1
x=2