4-c=21

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Solution for 4-c=21 equation:


Simplifying
4 + -1c = 21

Solving
4 + -1c = 21

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 + -1c = 21 + -4

Combine like terms: 4 + -4 = 0
0 + -1c = 21 + -4
-1c = 21 + -4

Combine like terms: 21 + -4 = 17
-1c = 17

Divide each side by '-1'.
c = -17

Simplifying
c = -17

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