-8+21=2c+1

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Solution for -8+21=2c+1 equation:


Simplifying
-8 + 21 = 2c + 1

Combine like terms: -8 + 21 = 13
13 = 2c + 1

Reorder the terms:
13 = 1 + 2c

Solving
13 = 1 + 2c

Solving for variable 'c'.

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

Add '-2c' to each side of the equation.
13 + -2c = 1 + 2c + -2c

Combine like terms: 2c + -2c = 0
13 + -2c = 1 + 0
13 + -2c = 1

Add '-13' to each side of the equation.
13 + -13 + -2c = 1 + -13

Combine like terms: 13 + -13 = 0
0 + -2c = 1 + -13
-2c = 1 + -13

Combine like terms: 1 + -13 = -12
-2c = -12

Divide each side by '-2'.
c = 6

Simplifying
c = 6

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