Solving:
1)
-58 - 6x = 42 + 4x
Pass the numbers with letter to the left and the numbers without letter to the right, changing the signal as they change sides.
- 6x - 4x = 42 + 58
- 10x = 100 simplify by (-1)
10x = - 100
[tex]x = \frac{-100}{10} [/tex]
[tex]\boxed{x = - 10}[/tex]
2)
37 + 5x = -2x - 33
Pass the numbers with letter to the left and the numbers without letter to the right, changing the signal as they change sides.
5x + 2x = - 33 - 37
7x = - 70
[tex]x = \frac{-70}{7} [/tex]
[tex]\boxed{x = - 10}[/tex]
3)
27 - 9x = -6x - 39
Pass the numbers with letter to the left and the numbers without letter to the right, changing the signal as they change sides.
- 9x + 6x = - 39 - 27
- 3x = - 66 simplify by (-1)
3x = 66
[tex]x = \frac{66}{3} [/tex]
[tex]\boxed{x = 22}[/tex]
