4+21=c

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Solution for 4+21=c equation:


Simplifying
4 + 21 = c

Combine like terms: 4 + 21 = 25
25 = c

Solving
25 = c

Solving for variable 'c'.

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

Add '-1c' to each side of the equation.
25 + -1c = c + -1c

Combine like terms: c + -1c = 0
25 + -1c = 0

Add '-25' to each side of the equation.
25 + -25 + -1c = 0 + -25

Combine like terms: 25 + -25 = 0
0 + -1c = 0 + -25
-1c = 0 + -25

Combine like terms: 0 + -25 = -25
-1c = -25

Divide each side by '-1'.
c = 25

Simplifying
c = 25

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