Question

resolva as equacoes a) {x=3y/x-y=2 b) {y=x/5x+7y=24

Answer 1

a) x = 3y

x - y = 2

3y - y = 2

2y = 2

y = 2/2

y = 1

x = 3y

x = 3*(1)

x = 3

(3, 1)

b) y = x

5x + 7y = 24

5*y + 7y = 24

12y = 24

y = 24/12

y = 2

y = x

2 = x

x = 2

(2, 2)