Question

metodo de de igualacion de x+y=3 y 2x3y=5

Answer 1

x + y = 3
x = 3 - y

2x - 3y = 5
2(3 - y) - 3y = 5
6 - 2y - 3y = 5
1 = 5y
1/5 = y

x = 3 - y
x = 3 - 1/5
x = 14/5
---------------------------------
x + y = 3
x = 3 - y

2x + 3y = 5
2(3 - y) + 3y = 5
6 - 2y + 3y = 5
y = - 1

x = 3 - y
x = 3 - (-1)
x = 3 + 1
x = 4