Question

−3y+4x=13
−5y−6x=−67
​
preciso achar o valor de x o do y

Answer 1

y=-3/3+4/3x. /- sinal divisão
$- 5( \frac{ - 13}{ 3} + \frac{4}{3}) - 6x = - 67$
x=7
$y = \frac{ - 3}{3} + \frac{4}{3} \times 7$
$y = 5$
$(x.y) = (7.5)$