2c+9=4c-9

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Solution for 2c+9=4c-9 equation:


Simplifying
2c + 9 = 4c + -9

Reorder the terms:
9 + 2c = 4c + -9

Reorder the terms:
9 + 2c = -9 + 4c

Solving
9 + 2c = -9 + 4c

Solving for variable 'c'.

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

Add '-4c' to each side of the equation.
9 + 2c + -4c = -9 + 4c + -4c

Combine like terms: 2c + -4c = -2c
9 + -2c = -9 + 4c + -4c

Combine like terms: 4c + -4c = 0
9 + -2c = -9 + 0
9 + -2c = -9

Add '-9' to each side of the equation.
9 + -9 + -2c = -9 + -9

Combine like terms: 9 + -9 = 0
0 + -2c = -9 + -9
-2c = -9 + -9

Combine like terms: -9 + -9 = -18
-2c = -18

Divide each side by '-2'.
c = 9

Simplifying
c = 9

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