{x+2y=18} {3x-4y=14}
Soluções para a tarefa
Respondido por
4
{x+2y=18
{3x-4y=14
x+2y=18 (×2)
{2x+4y=36
{3x-4y=14
5x=50
x=50/5
x=10
3x-4y=14
3.10-4y=14
30-4y=14
-4y=14-30
-4y=-16.(-1)
4y=16
y=16/4
y=4
S={(10, 4)}
{3x-4y=14
x+2y=18 (×2)
{2x+4y=36
{3x-4y=14
5x=50
x=50/5
x=10
3x-4y=14
3.10-4y=14
30-4y=14
-4y=14-30
-4y=-16.(-1)
4y=16
y=16/4
y=4
S={(10, 4)}
raissarainilyane:
obg
Perguntas interessantes