Oblicz:
a)
{x=5
4x - 3y = 14
b)
{2x + y = 3
x - 5y = -4
PROSZĘ ! :D
od 12anusia13
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a) {x = 5
4x - 3y = 14
{x = 5
4 * 5 - 3y = 14
{ x = 5
20 - 3y = 14 | - 20
{ x = 5
- 3y = - 6 | :(-3)
{ x = 5
y = 2
b)
{2x + y = 3 | * 5
x - 5y = -4
{ 10x + 5y = 15
x - 5y = -4
__________ +
11x = 11 | : 11
x = 1
2 * 1 + y = 3
2 + y = 3 | - 2
y = 1
