Answer:
x = 
Step-by-step explanation:
Given
3x + k = c ( isolate the term 3x by subtracting k from both sides )
3x = c - k ( divide both sides by 3 )
x = 
Answer:
9
-3x-12
9
+6x-7-9x-5
(Group liked terms)
9
+6x-9x-7-5
( subtract the numbers ) -7-5= -12
9
+6x-9x-12
( add similar elements ) 6x-9x=-3x
9
-3x-12
Step-by-step explanation:
3x - (2x + 8) = -6
3x -2x - 8 = -6
x - 8 = -6
x - 8 + 8 = -6 + 8
x = 2
4x²+x³
Factor is out x³ expression
The answer is :

Carry learning!