Question

 Determine o conjunto solução do sistema abaixo. * 
x=10 e y=15
x=15 e y=10
x=30 e y=15 ​

Answer 1

x + y = 25

x - y = 5

$\boxed{\begin{array}{lr} x+x=2x\\25+5=30\\2x=30\\x=30/2\\x=15 \end{array}}$

Sendo x = 15

$\boxed{\begin{array}{lr} x+y=25\\15+y=25\\y=25-15\\y=10\ \ \checkmark \end{array}}\\\boxed{\begin{array}{lr} x-y=5\\15-y=5\\-y=5-15\\-y=-10\\y=10\ \ \checkmark \end{array}}$

Resposta;

x = 15

e

y = 10

$|\underline{\overline{\mathcal{\boldsymbol{\LaTeX}}}}|$