Question

resolve p sistema de equaçoes x+y=6 2x+y=4

Answer 1

x + y = 6
2x + y = 4

x + y = 6
y = 6 - x

2x + y = 4
y = 4 - 2x

y = y
6 - x = 4 - 2x
- x + 2x = 4 - 6
x = - 2

y = 4 - 2x
y = 4 - 2 * (- 2)
y = 4 + 4
y = 8