Question

15-5x=2x-8+15


4x+4=12


-4x-2-3x+15=-8

Ajudem rapido pfv

Answer 1

-2x-5x=-8
-7x=-8 (-1)
x=8/7

4x+4=12
x=8/4=2

-4x-2-3x+15=-8
-4x-3x=-21 (-1)
7x=21
x=21/7=3

Answer 2

a) 15 - 5x = 2x  - 8  + 15
- 5x - 2x = - 8 + 15 - 15
- 7x = - 8 (-1)
7x = 8
x = 8/7

b) 4x + 4 = 12
4x = 12 - 4
4x = 8
x = 8/4
x = 2

c) - 4x - 2 - 3x + 15 = - 8
- 4x - 3x = - 8 - 15 + 2
- 7x = - 21 (-1)
7x = 21
x = 21/7
x = 3