Question

c) x + 3y = 5
2x – 3y = 16

a) (– 9/2,10) b) (7, – 2/3) c) (9, 5) d) (NDA) me ajudem por favor

Answer 1

b) { 7,-2/3 }

x + 3y = 5

2x – 3y = 16

Achando o X

x+2x+3y-3y = 5+16

3x = 21

x = 21/3

x = 7

Achando o Y

x+3y = 5

7+3y = 5

3y = 5-7

3y = -2

y = -2/3

✨ Boa semana✨

04/10/21