Odpowiedź :
∫2x + 5y = 7
∫3x - 5y = 3
5x=10 /5
x=2
2*2+5y=7
5y=3 /5
y=3/5
∫x + y = 2
∫x - y = 0
2x=2 /2
x=1
1+y=2
y=1
∫x + 2y = 9
∫-x - 3y = 16
-y=25
y=-25
x+2*(-25)=9
x=59
∫-x + y = 5
∫x + y = 5
2y=10 /2
y=5
x=0
∫2x - 1,1y = 0,7
∫0,5x + 1,1y = 4,3
2,5x=5 /2,5
x=2
-1,1y=-3,3
y=3
∫x - 2y = 4
∫-x + 3y = 0
y=4
x-8=4
x=12
∫5x + 3y = 0
∫-x - 2y = 7 /*5
5x+3y=0
-5x-10y=35
-7y=35 /-7
y=-5
5x=15 /5
x=3
∫3x - 5y = 3
5x=10 /5
x=2
2*2+5y=7
5y=3 /5
y=3/5
∫x + y = 2
∫x - y = 0
2x=2 /2
x=1
1+y=2
y=1
∫x + 2y = 9
∫-x - 3y = 16
-y=25
y=-25
x+2*(-25)=9
x=59
∫-x + y = 5
∫x + y = 5
2y=10 /2
y=5
x=0
∫2x - 1,1y = 0,7
∫0,5x + 1,1y = 4,3
2,5x=5 /2,5
x=2
-1,1y=-3,3
y=3
∫x - 2y = 4
∫-x + 3y = 0
y=4
x-8=4
x=12
∫5x + 3y = 0
∫-x - 2y = 7 /*5
5x+3y=0
-5x-10y=35
-7y=35 /-7
y=-5
5x=15 /5
x=3
1. |2x+5y=7
+|3x-5y=3
|x=2
5x=10/:5 |y=3/5
x=2
4+5y=7
5y=3/:5
y=3/5
2. |x+y=2
+|x-y=0
|x=1
2x=2/ :2 |y=1
x=1
1+y=2
y=1
3. |x+2y=9
+|-x-3y=16
-1y=25/ :(-1) |x=59
y= -25 |y= -25
x-50=9
x= 59
4. |-x+y=5
+|x+y=5
2y=10/ :2 |x=0
y=5 |y=5
x+5=5
x=0
5. |2x-1,1y=0,7
+|0.5x+1,1y=4,3
2,5x=5/ :2,5 |x=2
x=2 |y=3
1+1,1y=4,3
1,1y=3,3/ :1,1
y=3
6. |x-2y=4
+|-x+3y=0
y=4 |x=12
|y=4
x-8=4
x=12
7. |5x+3y=0
|-x-2y=7 / *5
|5x+3y=0
+|-5x-10y=35 |x=3
|y= -5
-7y=35/ :(-7)
y= -5
-x+10=7
-x= -3/ :(-1)
x=3
+|3x-5y=3
|x=2
5x=10/:5 |y=3/5
x=2
4+5y=7
5y=3/:5
y=3/5
2. |x+y=2
+|x-y=0
|x=1
2x=2/ :2 |y=1
x=1
1+y=2
y=1
3. |x+2y=9
+|-x-3y=16
-1y=25/ :(-1) |x=59
y= -25 |y= -25
x-50=9
x= 59
4. |-x+y=5
+|x+y=5
2y=10/ :2 |x=0
y=5 |y=5
x+5=5
x=0
5. |2x-1,1y=0,7
+|0.5x+1,1y=4,3
2,5x=5/ :2,5 |x=2
x=2 |y=3
1+1,1y=4,3
1,1y=3,3/ :1,1
y=3
6. |x-2y=4
+|-x+3y=0
y=4 |x=12
|y=4
x-8=4
x=12
7. |5x+3y=0
|-x-2y=7 / *5
|5x+3y=0
+|-5x-10y=35 |x=3
|y= -5
-7y=35/ :(-7)
y= -5
-x+10=7
-x= -3/ :(-1)
x=3