Question

Sendo a equação 2.X - 5Y = -7 e o valor de x=-2 Determine o valor de Y . ​

Answer 1

$2x - 5y = -7\\\\x = -2, y = ?\\\\2.(-2) - 5y = -7\\-4 - 5y = -7\\-5y = -7 + 4\\-5y = -3\\5y = 3\\y = \frac{3}{5}$