Question

procedimientos por favor

Answer 1

7x - y = - 6
7x + 6 = y.............(1)

4x + 3y = 3...........(2)

(1) en (2)

4x + 3y = 3
4x + 3(7x + 6) = 3
4x + 21x + 18 = 3
25x = - 15
5x = - 3
x = - 3/5..............(3)

(3) en (1)

7x + 6 = y
7( - 3/5) + 6 = y
- 21/5 + 6 = y
( - 21 + 30)/5 = y
9/5 = y