Question

Rozwiąż układ równań :

4y = 3x - 4
2x = -3(y - 5) - 1

Answer 1

3x=4-4y
3x=y/:3
x=y

Answer 2

{ 4y=3x-4
{ 2x=-3(y-5)-1

y=3/4x-1
2x=-3y+15-1

y=3/4x-1
2x=-3y+14
x=-3/2y+7

y=3/4(-3/2y+7)-1
y=-9/8y+21/4-1
y+9/8y=17/4
17/8y=17/4
y=17/4*8/17
y=2

x=-3/2*2+7
x=-3+7
x=4