Question

qual e a solucao da equacao 10x-8y=-14/x+y=4

Answer 1

$\boxed{\left \{ {{10x-8y=-14} \atop {x+y=4}} \right. }$

x = 4-y

$10x-8y=-14 \\ \\ 10(4-y)-8y=-14 \\ \\ 40 -10y -8y = -14 \\ \\ -18y = -54 *(-1)\\ \\ 18y = 54 \\ \\ y = \frac{54}{18} \\ \\ y= 3 \\ \\ \\ \\ x = 4-y \\ \\ x = 4 - 3 \\ \\ x = 1$