10c-2c-9=30

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Solution for 10c-2c-9=30 equation:


Simplifying
10c + -2c + -9 = 30

Reorder the terms:
-9 + 10c + -2c = 30

Combine like terms: 10c + -2c = 8c
-9 + 8c = 30

Solving
-9 + 8c = 30

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 + 8c = 30 + 9

Combine like terms: -9 + 9 = 0
0 + 8c = 30 + 9
8c = 30 + 9

Combine like terms: 30 + 9 = 39
8c = 39

Divide each side by '8'.
c = 4.875

Simplifying
c = 4.875

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