Question

Resolva o sistema:
e afins preciso de ajuda✋​

Answer 1

a) 5y + y = 12

6y = 12

y = 2

x = 5 x 2

x = 10

b) y = 7 - 2x

5x - 2 x (7 - 2x) = -5

5x - 14 + 4x = -5

9x = -5 + 14

9x = 9

x = 1

y = 7 - 2 x 1

y = 5