-3c-(-4c)+1=21

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Solution for -3c-(-4c)+1=21 equation:


Simplifying
-3c + -1(-4c) + 1 = 21

Remove parenthesis around (-4c)
-3c + -1 * -4c + 1 = 21

Multiply -1 * -4
-3c + 4c + 1 = 21

Reorder the terms:
1 + -3c + 4c = 21

Combine like terms: -3c + 4c = 1c
1 + 1c = 21

Solving
1 + 1c = 21

Solving for variable 'c'.

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

Add '-1' to each side of the equation.
1 + -1 + 1c = 21 + -1

Combine like terms: 1 + -1 = 0
0 + 1c = 21 + -1
1c = 21 + -1

Combine like terms: 21 + -1 = 20
1c = 20

Divide each side by '1'.
c = 20

Simplifying
c = 20

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