4c-4-2c=42

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Solution for 4c-4-2c=42 equation:


Simplifying
4c + -4 + -2c = 42

Reorder the terms:
-4 + 4c + -2c = 42

Combine like terms: 4c + -2c = 2c
-4 + 2c = 42

Solving
-4 + 2c = 42

Solving for variable 'c'.

Move all terms containing c to the left, all other terms to the right.

Add '4' to each side of the equation.
-4 + 4 + 2c = 42 + 4

Combine like terms: -4 + 4 = 0
0 + 2c = 42 + 4
2c = 42 + 4

Combine like terms: 42 + 4 = 46
2c = 46

Divide each side by '2'.
c = 23

Simplifying
c = 23

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