(7c*2c)+13c=21c

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Solution for (7c*2c)+13c=21c equation:


Simplifying
(7c * 2c) + 13c = 21c

Reorder the terms for easier multiplication:
(7 * 2c * c) + 13c = 21c

Multiply 7 * 2
(14c * c) + 13c = 21c

Multiply c * c
(14c2) + 13c = 21c

Reorder the terms:
13c + (14c2) = 21c

Solving
13c + (14c2) = 21c

Solving for variable 'c'.

Reorder the terms:
13c + -21c + (14c2) = 21c + -21c

Combine like terms: 13c + -21c = -8c
-8c + (14c2) = 21c + -21c

Combine like terms: 21c + -21c = 0
-8c + (14c2) = 0

Factor out the Greatest Common Factor (GCF), '2c'.
2c(-4 + (7c)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor 'c' equal to zero and attempt to solve: Simplifying c = 0 Solving c = 0 Move all terms containing c to the left, all other terms to the right. Simplifying c = 0

Subproblem 2

Set the factor '(-4 + (7c))' equal to zero and attempt to solve: Simplifying -4 + (7c) = 0 Solving -4 + (7c) = 0 Move all terms containing c to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + (7c) = 0 + 4 Combine like terms: -4 + 4 = 0 0 + (7c) = 0 + 4 (7c) = 0 + 4 Combine like terms: 0 + 4 = 4 (7c) = 4 Divide each side by '7'. c = 0.5714285714 Simplifying c = 0.5714285714

Solution

c = {0, 0.5714285714}

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