Question

x + y = 3 3x - y = 1​

Answer 1

x = 1. y = 2

Explicación paso a paso:

x + y = 3 —> x = 3 - y

3x - y = 1

3(3 - y) - y = 1

9 - 3y - y = 1

9 - 4y = 1

- 4y = 1 - 9

- 4y = - 8

-4y/-4 = -8/-4

y = 2

x = 3 - y

x = 3 - (2)

x = 1