c+21(1-c)=10-3c

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Solution for c+21(1-c)=10-3c equation:


Simplifying
c + 21(1 + -1c) = 10 + -3c
c + (1 * 21 + -1c * 21) = 10 + -3c
c + (21 + -21c) = 10 + -3c

Reorder the terms:
21 + c + -21c = 10 + -3c

Combine like terms: c + -21c = -20c
21 + -20c = 10 + -3c

Solving
21 + -20c = 10 + -3c

Solving for variable 'c'.

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

Add '3c' to each side of the equation.
21 + -20c + 3c = 10 + -3c + 3c

Combine like terms: -20c + 3c = -17c
21 + -17c = 10 + -3c + 3c

Combine like terms: -3c + 3c = 0
21 + -17c = 10 + 0
21 + -17c = 10

Add '-21' to each side of the equation.
21 + -21 + -17c = 10 + -21

Combine like terms: 21 + -21 = 0
0 + -17c = 10 + -21
-17c = 10 + -21

Combine like terms: 10 + -21 = -11
-17c = -11

Divide each side by '-17'.
c = 0.6470588235

Simplifying
c = 0.6470588235

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