Question

1) x - 7 = 0
(6)
(5)
(4)
(7)
(3)
---
2)3x + 9 = 0.
(3)
(-3)
(2)
(1)
(0)
---
3) 2x + 4 = 0.
(2)
(1)
(-2)
(3)
(5)
---
4) 3x + 5 = 11
(4)
(5)
(6)
(2)
(-2)
---
5) 3x + 15 = 2x + 18.
(3)
(1)
(4)
(5)
(-1)

Answer 1

Resposta:

1) x =7

2) 3x=-9

x=-9/3

x= - 3

3) 2x=-4

x= -2

4)3x=11-5

x=6/3

x=2

5) 3x-2x=18-15

x=3