Question

Resolva os sistemas abaixo:
a) {x + 5y = 10
{2x + y = 20

b) {x + y = 25
{4x − y = 5

Answer 1

Resposta:

a)x+5y=10

2x+y=20

_________

3x+6y=30

b) x+y=25

4x-y=5

_________

5x=30

x=6