4c-9=20

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Solution for 4c-9=20 equation: 


Simplifying
4c + -9 = 20

Reorder the terms:
-9 + 4c = 20

Solving
-9 + 4c = 20

Solving for variable 'c'.

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

Add '9' to each side of the equation.
-9 + 9 + 4c = 20 + 9

Combine like terms: -9 + 9 = 0
0 + 4c = 20 + 9
4c = 20 + 9

Combine like terms: 20 + 9 = 29
4c = 29

Divide each side by '4'.
c = 7.25

Simplifying
c = 7.25

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