Question

determine as raizes das funçoes de 1* grau
A) y=5x-60

B) y=-3x+27

Answer 1

$a) \: 5x - 6 = 0 \\ 5x = 6 \\ x = \frac{6}{5} \\ \\ b) \: - 3x + 27 = 0 \\ - 3x = -27 \\ 3x = 27 \\ x = \frac{27}{3} \\ x = 9$