Question

Equação do 1° Grau
2× + 6 = 0


-4 = 2x


20 = 5x

2 = 2x

Answer 1

a) 2x + 6 = 0

2x = -6

x = -6/2

x = -3

b) -4 = 2x

2x = -4

x = -4/2

x = -2

c) 20 = 5x

5x = 20

x = 20/5

x = 4

d) 2 = 2x

2/2 = x

1 = x

x = 1