Question

qual a resposta dessa equação:

{4x-3y=14

[x-2y=6

Answer 1

4x-3y=14
x-2y=6 (-4)

4x-3y=14
-4x+8y= -24
    5y= -10
    y= -2

Cálculo de x
4x-3y=14
4x- 3(-2)=14
4x+6=14
4x=14-6
4x= 8
x=2

Answer 2

$\left \{ {{4x-3y=14} \atop {x-2y=6~(-4)}} \right.$

$\left \{ {{4x-3y=14} \atop {-4x+8y=-24}} \right.$

$5y=-10\\y=- \frac{10}{5} \\y=-2$

$4x-3y=14\\4x-3(-2)=14\\4x+6=14\\4x=8\\x= \frac{8}{4} \\x=2$