Rozwiąż układy równań
b) y-x=4
3(x+y)=24
d) 3x-1=y-2
4x-3=-2(y-2)
b)
{y-x=4
{3(x+y)=24
{y-x=4 |*3
{3x+3y=24
{3y-3x=12
__________
6y=36
y=6
{y=6
{x=2
d)
{3x-1=y-2
{4x-3=-2(y-2)
{3x-y=-1
{4x-3=-2y+4
{3x-y=-1 |*2
{4x+2y=7
{6x-2y=-2
_________
10x=5
x=1/2
{x=1/2
{1,5x-y=-1
{x=0,5
{y=3,5
y-x=4
y-x=4/*3
3x+3y=24
3y-3x=12
3x-3x+3y+3y=36
6y=36/6
6-x=4
-x=4-6
-x=-2/(-1)
x=2
3x-1=y-2
3x-y=-1/*2
4x+2y=3+4
6x-2y=-2
4x+2y=7
_____________
6x+4x-2y+2y=5
10x=5/10
x=0,5
3*0,5-y=-1
-y=-2,5/(-1)
y=2,5
Myślę że pomogłem. Liczę na naj ;) pozdrawiam
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b)
{y-x=4
{3(x+y)=24
{y-x=4 |*3
{3x+3y=24
{3y-3x=12
{3x+3y=24
__________
6y=36
y=6
{y=6
{y-x=4
{y=6
{x=2
d)
{3x-1=y-2
{4x-3=-2(y-2)
{3x-y=-1
{4x-3=-2y+4
{3x-y=-1 |*2
{4x+2y=7
{6x-2y=-2
{4x+2y=7
_________
10x=5
x=1/2
{x=1/2
{3x-y=-1
{x=1/2
{1,5x-y=-1
{x=0,5
{y=3,5
b)
y-x=4
3(x+y)=24
y-x=4/*3
3x+3y=24
3y-3x=12
3x+3y=24
__________
3x-3x+3y+3y=36
6y=36/6
y=6
6-x=4
-x=4-6
-x=-2/(-1)
x=2
y=6
d)
3x-1=y-2
4x-3=-2(y-2)
3x-y=-1/*2
4x+2y=3+4
6x-2y=-2
4x+2y=7
_____________
6x+4x-2y+2y=5
10x=5/10
x=0,5
3*0,5-y=-1
-y=-2,5/(-1)
y=2,5
x=0,5
Myślę że pomogłem. Liczę na naj ;) pozdrawiam