Rowiązanie układ równań : Klamerka : 2x + y = 7 x = y + 2
2x + y = 7 x = y + 2
2(y+2)+y=7
2y+4+y=7
3y=3
y=1
x=1+2
x=3
spr:
2x + y = 7
2*3+1=7
6+1=7
7=7
2x+y=7
x-y=2 /.(-2)
-2x+y=-4
2y=3
y=1,5
2x=-1,5+7
2x=5,5
x=2,75
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2x + y = 7
x = y + 2
2(y+2)+y=7
2y+4+y=7
3y=3
y=1
x=1+2
x=3
spr:
2x + y = 7
2*3+1=7
6+1=7
7=7
2x+y=7
x-y=2 /.(-2)
2x+y=7
-2x+y=-4
2y=3
y=1,5
2x=-1,5+7
2x=5,5
x=2,75
y=1,5