Question

Resolva as funções: (quero conta completa pfvr)

1). y=2+3x
2). y=30-2x
3). y=20-3x

Answer 1

1)

y = 2 + 3x
0 = 2 + 3x
-2 = 3x
-2/3 = x

2)

y = 30 - 2x
0 = 30 - 2x
-30 = -2x
-30/-2 = x
15 = x

3)

y = 20 - 3x
0 = 20 - 3x
-20 = -3x
-20/-3 = x
20/3 = x