Question

Resolva o sistema
2x + 7y = 17
5x - y = -13

Answer 1

Oi ✅

2x + 7y = 17

5x - y = -13

y = 5x + 13

2x + 7 = 17

2x + 7 (5x + 13) = 17

2x + 35x + 91 = 17

37x = -74

x = -74/37

x = -2

y = 5x + 13

y = 5 . - 2 + 13

y = -10 + 13

y = 3