Question

Resolva as equações do primeiro grau:

a) 4x - 1 = 3x - 3


b) 5x - 3x - 6 = 15


c) 7x - 2 + 4 = 10 + 5x


d) 4x + 12 = 1


e) 6x + 9 - 4x + 4 = 3


f) 3x - 2 = 4x - 9​

Answer 1

a) 4x - 1 = 3x - 3

4x-3x = -3+1

x = -2

b) 5x - 3x - 6 = 15

5x-3x = 15+6

2x = 21

x = 21/2

c) 7x - 2 + 4 = 10 + 5x

7x-5x = 10+2-4

2x = 8

x = 8/2

x = 4

d) 4x + 12 = 1

4x = 1-12

4x = -11

x = -11/4

e) 6x + 9 - 4x + 4 = 3

6x-4x = 3-9-4

2x = -10

x = -10/2

x = -5

f) 3x - 2 = 4x - 9

3x-4x = -9+2

-x = -7 ×(-1)

x = 7

✨ Bom dia!!!✨

30/10/21