Odpowiedź:
- (x - 2) + 3(y + 1) = 9
x + 2y = 6
- x + 2 + 3y + 3 = 9
- x + 3y = 9 - 2 - 3
- x + 3y = 9 - 5
- x + 3y = 4
x + 2y = 6 stąd x = 6 - 2y wstawiamy do pierwszego równania
- (6 - 2y) + 3y = 4
- 6 + 2y + 3y = 4
5y = 4 + 6
5y = 10
y = 10/5 = 2
x + 2 * 2 = 6
x + 4 = 6
x = 6 - 4 = 2
x = 2 , y = 2
Sprawdzenie
- 2 + 3 * 2 = 4
- 2 + 6 = 4
4 = 4
L = P
x +2y = 6
2 + 2 * 2 = 6
2 + 4 = 6
6 = 6
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Odpowiedź:
- (x - 2) + 3(y + 1) = 9
x + 2y = 6
- x + 2 + 3y + 3 = 9
x + 2y = 6
- x + 3y = 9 - 2 - 3
x + 2y = 6
- x + 3y = 9 - 5
x + 2y = 6
- x + 3y = 4
x + 2y = 6 stąd x = 6 - 2y wstawiamy do pierwszego równania
- (6 - 2y) + 3y = 4
- 6 + 2y + 3y = 4
5y = 4 + 6
5y = 10
y = 10/5 = 2
x + 2y = 6
x + 2 * 2 = 6
x + 4 = 6
x = 6 - 4 = 2
x = 2 , y = 2
Sprawdzenie
- x + 3y = 4
- 2 + 3 * 2 = 4
- 2 + 6 = 4
4 = 4
L = P
x +2y = 6
2 + 2 * 2 = 6
2 + 4 = 6
6 = 6
L = P